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  • Articles  (2,568,824)
  • 1980-1984  (950,557)
  • 1975-1979  (806,119)
  • 1965-1969  (590,740)
  • 1950-1954  (221,408)
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  • 1
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    Nachmessungen im Bereich der Pasterze (Glocknergruppe) im Jahre 1984 (1984)
    Zeitschrift für Gletscherkunde und Glazialgeologie
    In:  EPIC3Innsbruck, Zeitschrift für Gletscherkunde und Glazialgeologie
    Details
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 2
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    Nachmessungen im Bereich der Pasterze (Glocknergruppe) im Jahre 1983 (1983)
    Zeitschrift für Gletscherkunde und Glazialgeologie
    In:  EPIC3Innsbruck, Zeitschrift für Gletscherkunde und Glazialgeologie
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    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 3
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    Die Gletscher der Österreichischen Alpen 1983/84 (1984)
    Zeitschrift für Gletscherkunde und Glazialgeologie
    In:  EPIC3Innsbruck, Zeitschrift für Gletscherkunde und Glazialgeologie
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    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 4
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    Sediment dynamics on the Northwest African continental margin (1982)
    Wiley
    In:  EPIC3The Ocean Floor : Bruce Heezen commemorative volume, (A Wiley-Interscience publication), Chichester, Wiley, pp. 147-163, ISBN: 0-471-10091-9
    Details
    Publication Date: 2014-05-12
    Description: The sedimentation regime off Northwest Africa is shaped by: (1) structur~al factors. which result in generallv low relief on land. shelf widths between 40 and more than 120 km. and av-erage sfope inclinations between 10 30' and 30; (2) land climates. which contral the delivery of terrigenous particles to the margin: (3) water movements including boundary currents and upwelling; and (4) the post- Pleistocene sea level rise. This chapter combines published and new results arising from research into the sedimentation processes off Northwest Africa. and emphasizes particularly the activities of the Kiel marine geological group during the past few years. Reviews of cruise activities and results were given in Closs et al. (1969) (Meteor cruise 8. 1967. off Morocco) . Seibold (1972) (Meteor cmise 25 . 1971. off Sahara to Central Senegal). Seibold and Hinz (1976) (Meteor cmise 39,1975 . and Valdivia cruise 10. 1975, from Morocco to South Senegal), and Waiden et al. (1974) (Meteor cmise 30, 1973, off Sierra Leone). Some of these cmises were used for pre- or post-site surveys for the Deep-Sea Drilling Project, or to add undisturbed Quaternary cores to the Glomar Challenger cores (leg 41, ] 975; Lancelot, et al .• 1978); leg 47 A, Arthur er al .• 1979; Lutze et al., 1979). We have concentrated our geological investigations on a number of standard profiles from the shelf to the upper continental rise as given in Figure 1. The manuscript was finished May 1979.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Inbook , peerRev
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  • 5
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    3.5 kHz journal of Polarstern Leg ARK-II/4 1984-08-09 to 1984-08-27 (1984)
    Alfred Wegener Institute for Polar and Marine Research
    In:  EPIC3Bremerhaven, Alfred Wegener Institute for Polar and Marine Research
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    Publication Date: 2019-07-17
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  • 6
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    3.5 kHz journal of Polarstern Leg ANT-II/4 1983-12-29 to 1984-03-10 (1984)
    Alfred Wegener Institute for Polar and Marine Research
    In:  EPIC3Bremerhaven, Alfred Wegener Institute for Polar and Marine Research
    Details
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 7
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    3.5 kHz journal of Polarstern Leg ARK-III/2 1985-07-03 to 1985-07-30 (1984)
    Alfred Wegener Institute for Polar and Marine Research
    In:  EPIC3Bremerhaven, Alfred Wegener Institute for Polar and Marine Research
    Details
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 8
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    TANGAROA cruise report and results (1975)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Details
    Publication Date: 2016-07-08
    Repository Name: EPIC Alfred Wegener Institut
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  • 9
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    Weekly reports for R.V. Polarstern expedition ANT-II/3 (1983-11-22 - 1983-12-27, Punta Arenas - Punta Arenas), German version (1983)
    Alfred Wegener Institute for Polar and Marine Research
    In:  EPIC3Alfred-Wegener-Institute for Polar- and Marine Research, Bremerhaven, Bremerhaven, Alfred Wegener Institute for Polar and Marine Research
    Details
    Publication Date: 2016-07-16
    Repository Name: EPIC Alfred Wegener Institut
    Type: Weekly Reports , notRev
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  • 10
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    Documents of the Trans-Pacific cruise with Spencer F. Baird in 1953 (1953)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Details
    Publication Date: 2016-07-07
    Repository Name: EPIC Alfred Wegener Institut
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  • 11
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    Sandablagerungen während der postglazialen Transgression in der Eckernförder Bucht (westliche Ostsee) (1978)
    Senckenbergiana maritima
    In:  EPIC3Frankfurt a.M., Senckenbergiana maritima
    Details
    Publication Date: 2018-04-05
    Repository Name: EPIC Alfred Wegener Institut
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  • 12
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    Radiocarbon dates II (1983)
    Dating Laboratory, University of Helsinki
    In:  EPIC3Helsinki, Finland, Dating Laboratory, University of Helsinki
    Details
    Publication Date: 2019-09-03
    Repository Name: EPIC Alfred Wegener Institut
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  • 13
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    Radiocarbon dates I (1979)
    Dating Laboratory, University of Helsinki
    In:  EPIC3Helsinki, Finland, Dating Laboratory, University of Helsinki
    Details
    Publication Date: 2019-09-03
    Repository Name: EPIC Alfred Wegener Institut
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  • 14
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    Pictures of the RISE III Expedition with R/V New Horizon (1979)
    SIO
    In:  EPIC3San Diego, SIO
    Details
    Publication Date: 2016-09-29
    Repository Name: EPIC Alfred Wegener Institut
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  • 15
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    Laboruntersuchungen zur Primärproduktion mariner Planktondiatomeen bei suboptimalem Phosphatangebot (1984)
    In:  EPIC3
    Details
    Publication Date: 2017-02-09
    Repository Name: EPIC Alfred Wegener Institut
    Type: Thesis , notRev
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  • 16
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    Figure 13-3 of Pratt (1967) (1967)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Details
    Publication Date: 2016-08-18
    Repository Name: EPIC Alfred Wegener Institut
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  • 17
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    Figure 1 of: Mineralogy and composition of concentric layers within a manganese nodule from the North Pacific Ocean (1981)
    Marine Geology, Elsevier
    In:  EPIC3Amsterdam, Marine Geology, Elsevier
    Details
    Publication Date: 2016-10-04
    Repository Name: EPIC Alfred Wegener Institut
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  • 18
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    Verfahren zur aufarbeitung von Manganknollen durch Schwefelsäuredrucklaugung (1977)
    Erzmetall
    In:  EPIC3-, Erzmetall
    Details
    Publication Date: 2016-12-22
    Repository Name: EPIC Alfred Wegener Institut
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  • 19
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    Figures of: Atlantic Continental Shelf and Slope of the United States - Physiography and Sediments of the Deep-Sea Basin (1968)
    U.S. Geological Survey
    In:  EPIC3Reston, U.S. Geological Survey
    Details
    Publication Date: 2016-08-30
    Repository Name: EPIC Alfred Wegener Institut
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  • 20
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    Descriptive Report to accompany Special Project AMC-11-67, USC&GSS Discoverer, Oct. 3-18, 1967 (1967)
    U.S. Department of Commerce
    In:  EPIC3Washington, U.S. Department of Commerce
    Details
    Publication Date: 2016-09-23
    Repository Name: EPIC Alfred Wegener Institut
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  • 21
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    The orbital theory of Pleistocene climate: support from a revised chronology of the marine d18O record (1984)
    D. Reidel Publishing Company
    In:  EPIC3Dordrecht, D. Reidel Publishing Company
    Details
    Publication Date: 2016-10-06
    Description: https://www.researchgate.net/publication/230891291_The_Orbital_Theory_of_Pleistocene_Climate_Support_frim_a_Revised_Chronology_of_the_Marine_d18O_Record
    Repository Name: EPIC Alfred Wegener Institut
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  • 22
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    Figures of: The Mineral Resources of the Sea (1965)
    Elsevier
    In:  EPIC3Amsterdam, Elsevier
    Details
    Publication Date: 2016-08-25
    Repository Name: EPIC Alfred Wegener Institut
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  • 23
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    Figure 60 of: A biological and geological reconnaissance of selected topographical features on the Texas continental shelf: a final report to the US Department of the Interior, Bureau of Land Management, Outer Continental Shelf Office, New Orleans, Louisiana (1976)
    Texas A&M University
    In:  EPIC3Texas, Texas A&M University
    Details
    Publication Date: 2016-10-21
    Repository Name: EPIC Alfred Wegener Institut
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  • 24
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    Figure 2 of: Growth rates and possible age of a North Pacific manganese nodule (1979)
    Plenum Publishing Corporation
    In:  EPIC3New York, Plenum Publishing Corporation
    Details
    Publication Date: 2016-10-24
    Repository Name: EPIC Alfred Wegener Institut
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  • 25
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    Illustration of Mn nodules (1978)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
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    Publication Date: 2016-08-15
    Repository Name: EPIC Alfred Wegener Institut
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  • 26
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    Visual observations of manganese deposits on the Blake Plateau (1969)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
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    Publication Date: 2015-11-27
    Repository Name: EPIC Alfred Wegener Institut
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  • 27
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    Weekly reports for R.V. Polarstern expedition ANT-I/2 (1983-01-22 - 1983-03-24, Cape Town - Rio de Janeiro), German (1983)
    Alfred Wegener Institute for Polar and Marine Research
    In:  EPIC3Alfred-Wegener-Institute for Polar- and Marine Research, Bremerhaven, Bremerhaven, Alfred Wegener Institute for Polar and Marine Research
    Details
    Publication Date: 2015-12-02
    Repository Name: EPIC Alfred Wegener Institut
    Type: Weekly Reports , notRev
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  • 28
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    GOS 74 Expedition, Sample Log, R/V Gosnold, (Unpublished) (1965)
    USGS
    In:  EPIC3Bremerhaven, USGS
    Details
    Publication Date: 2015-11-28
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 29
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    Cruise Report - R/V GOSNOLD #74 (1965)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
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    Publication Date: 2015-12-14
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  • 30
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    Data for: Growth rates of manganese nodules in Oneida Lake, New York (1980)
    Earth and Planetary Science Letters
    In:  EPIC3UK, Earth and Planetary Science Letters
    Details
    Publication Date: 2015-12-16
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  • 31
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    Figures of: Mineralogical and Geochemical Characteristics of Manganese Nodules from the Suiko Seamount, Northwestern Pacific Ocean - 1 - Some Problems Concerning the Mineralogy (1977)
    Bulletin of the Geological Survey of Japan
    In:  EPIC3Japan, Bulletin of the Geological Survey of Japan
    Details
    Publication Date: 2016-02-01
    Repository Name: EPIC Alfred Wegener Institut
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  • 32
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    Figures of: Ferromanganese deposits off northeast Brazil (S. Atlantic) (1982)
    Marine Geology
    In:  EPIC3Amsterdam, Marine Geology
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    Publication Date: 2016-02-04
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  • 33
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    Figures of "Submarine geology of two flat-topped northeast Pacific seamounts" (1952)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
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    Publication Date: 2016-06-02
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  • 34
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    An Introduction to Echo Sounding (1982)
    Honeywell ELAC Nautik GmbH
    In:  EPIC3Kiel, Honeywell ELAC Nautik GmbH
    Details
    Publication Date: 2014-10-25
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  • 35
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    A microscopic and electron probe investigation of manganese nodules from the northwest Indian Ocean (figures) (1968)
    DSR
    In:  EPIC3Elsevier, DSR
    Details
    Publication Date: 2015-09-09
    Repository Name: EPIC Alfred Wegener Institut
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  • 36
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    Bericht über die Gewinnung von Korallen-Bohrkernen für Isotopen-Untersuchungen zur klimatischen Entwicklung der letzten Jahrhunderte (1984)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
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    Publication Date: 2018-04-03
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  • 37
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    Umwelt, Produktion und Sedimentation benthischer foraminiferen in der westlichen Ostsee (1976)
    Christian-Albrechts-Universität
    In:  EPIC3Kiel, Christian-Albrechts-Universität
    Details
    Publication Date: 2018-04-11
    Repository Name: EPIC Alfred Wegener Institut
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  • 38
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    Deutsche Antarktische Expedition - Benennung geographischr Begriffe (1952)
    Bundesminister der Justiz
    In:  EPIC3Bremerhaven, Bundesminister der Justiz
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    Publication Date: 2018-08-08
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  • 39
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    Sedimentations-Geschichte der Bermuda North Lagoon im Holozän (Sedimentation history of the Bermuda North Lagoon during the Holocene) (1984)
    self-published
    In:  EPIC3self-published, 271 p.
    Details
    Publication Date: 2018-08-28
    Description: Summary Holocene sediments of the North Lagoon, Bermuda, were studied with shallow seismic reflection profiles (200 km CSP-survey, UNIBOOM-system) and vibration coring (40 sediment cores, pneumatic vibration corer, Meischner et al., 1981). Seismic Stratigraphy Four seismic sequences are distinguishable by seismic stratigraphy. All seismic sequences correspond to depositional sequences built up during high sea levels in interglacial times. The seismic sequences are separated by unconformities which are often strongly reflective and correspond to emersion planes during glacial phases. The upper sequence (sequence 4) is related to Holocene sediments. The pre-Holocene bedrock is divided into three different seismic sequences (Kuhn et al., 1981): Sequence 1: oldest Pleistocene sequence (pre-Sangamon sea-level highstands), upper boundary with levelled relief (lower boundary not discernible), composed of strongly cemented carbonate sediments, forms the bedrock below Three Hill Shoals Sequence 2: Sangamon (125 ky sea-level highstand), distinct surface morphology, forms the bedrock of a large area below Holocene sediments, Holocene reefs grew up on elevations of the sequence 2 surface, the Holocene reef rim was developed on an elevated rim of sequence 2 Sequence 3: youngest Pleistocene sequence (Sangamon, 105 and 85 ky sealevel highstands lower than recent), deposited mainly in depressions of the bedrock deeper than -15 m below recent Mean Sea Level, levelling the older relief, peat sedimentation in places The distribution of recent reef areas and lagoonal basins is strongly controlled by pre-Holocene topography and geology of the bedrock. During the Holocene approx. 1050 x 106 m3 of carbonate sediments were deposited in the North Lagoon (290 km2) and approx. 1350 x 106 m3 in the reef rim area (170 km2). Sedimentology There are no larger oscillations of the Holocene sea level identifiable in the sedimentological record. The pre-Holocene topography was gradually drowned during the Holocene sea-level rise. At first, the depositional depressions were separated and landlocked. Fresh water peat marshes, fresh water ponds, marine ponds and bays were formed. With rising sea level, the land barriers were more and more eroded, drowned and lost their influence on the back-barrier sedimentation area. Autochthonous and allochthonous peat, lime gyttja and carbonate mud are a typical transgressive back-barrier sediment sequence. After destruction of the barrier, the depositional milieu changed from restricted marine to normal marine, open lagoonal. Sea-grass sediments and nearly mud-free carbonate sand were deposited in shallow water in an exposed environment. Hydrodynamic energy decreases with increasing water depth in the lagoonal basin. A more densely growing reef rim and intralagoonal reef growth added to the protection of the deeper lagoonal floors. Fine-grained sediments were deposited in this environment. They are distributed over a large area of the North Lagoon and form the top of the transgressive lagoonal sediment sequence. Holocene reefs mainly developed on rises of the pre-Holocene surface. In the early Holocene, solid reef build-ups were able to keep up with the rapid rise of sea level. Sand pockets in the reefs were left behind and filled up mainly in the later Holocene. The percentage of fine-grained sediments, produced and resuspended in the reef rim and deposited in the near lagoonal back-reef zone, increased during the Holocene. Two models of Holocene sedimentation in a depression and on an elevation of the pre-Holocene surface illustrate the dependence of vertical facies gradation on pre-Holocene topography. Trends of the mostly polymodal grain-size distributions of the Holocene sediments are a coarsening-upward in the back-barrier and a fining-upward in the lagoonal sediment sequences. Change in the composition of the molluscan fauna in the Holocene sediments (particle size 〉 2000 µm) is an Indication for fades changes. Gastropods are abundant in the basal backbarrier sediments. Bivalves are rare and their diversity 1s low. Sea-grass sediments contain Codakia orbicularis and Astraea phoebia shells. In the sheltered lagoonal environment shell fragments 〉 2000 µm become rare, common species are Gouldia cerina, Pitar fulminata and Finella sp. (approx. 1000 µm). Fine-grained reef-rim derived sediments differ from lagoonal sediments by a higher percentage of Homotrema rubrum fragments and Alcyonaria spicules.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Thesis , notRev
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  • 40
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    Fig. 3-6 Manganese nodules (1975)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Details
    Publication Date: 2016-08-16
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 41
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    Figures of: Mineralogical and geochemical investigations on Finnish lake ores (1975)
    Bulletin of the Geological Society of Finland
    In:  EPIC3Espoo, Bulletin of the Geological Society of Finland
    Details
    Publication Date: 2016-08-31
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 42
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    JOIDES - Blake Panel Report. Cruise Report and Preliminary Core Log. M/V Caldrill I, 17 April to 17 May 1975 (1965)
    National Science Foundation
    In:  EPIC3Washington D.C., National Science Foundation
    Details
    Publication Date: 2016-10-18
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 43
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    Radiographien von Lockersedimenten - Herstellung von Radiographien an Sedimentkernen nach der im GIK üblichen Methode (1975)
    GIK
    In:  EPIC3Kiel, GIK
    Details
    Publication Date: 2017-04-13
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 44
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    The Gerber Variable Scale (1953)
    The Gerber Scientific Instrument Company
    In:  EPIC3Hartford, Connecticut, The Gerber Scientific Instrument Company
    Details
    Publication Date: 2017-04-18
    Repository Name: EPIC Alfred Wegener Institut
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  • 45
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    Bioturbation in Spätquartären Tiefwasser Sedimentation vor NW-Afrika (1979)
    Christian-Albrechts-Universität
    In:  EPIC3Kiel, Christian-Albrechts-Universität
    Details
    Publication Date: 2017-04-13
    Repository Name: EPIC Alfred Wegener Institut
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  • 46
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    Report on a shore collecting trip to the Azores (12 September-1 November 1979), including a list of collecting stations [CANCAP-Project] (1981)
    In:  Various articles (0523-7904) vol.61 (1981) p.1
    Details
    Publication Date: 2018-08-14
    Keywords: oceanography ; zoogeography ; taxonomy ; collecting stations ; faunistic assemblages ; list ; Canary Islands ; Archipelago of Cape Verde ; Archipelago of Madeira ; Archipelago of the Azores ; North Africa ; North Atlantic Ocean ; CANCAP-Project
    Repository Name: National Museum of Natural History, Netherlands
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  • 47
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    Verpreiding en oecologie van water- en oppervlaktewantsen in het gebied van de Duinwaterleiding van 'S-Gravenhage (1976)
    Details
    Publication Date: 2018-05-24
    Description: Verslag van een doctoraal onderwerp bij de Vakgroep Systematische Dierkunde en Evolutiebiologie van de Rijksuniversiteit Leiden, september 1976
    Keywords: Den Haag ; waterwantsen ; oppervlaktewantsen
    Repository Name: National Museum of Natural History, Netherlands
    Type: report
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  • 48
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    New records of terricolous microlichens from southeast Greenland (1983)
    In:  Miscellaneous publications of the University of Utrecht Herbarium (1572-6592) vol.1 (1983) nr.1 p.49
    Details
    Publication Date: 2015-05-08
    Description: Twelve species of terricolous microlichens from the Angmagssalik District, Southeast Greenland, are reported: Caloplaca friesii, C. livida, Lecanora boligera, Lecidea oligotropha and Leciophysma arctophila, which are new to the lichen flora of Greenland, Rinodina conradi, which is new to the eastcoast, and Baeomyces roseus, B. rufus, Buellia geophila, B. punctata, Caloplaca tornoensis and Mycoblastus tornoensis, new to Southeast Greenland. In a discussion of the greenlandic distribution, unpublished records from the herbarium of Copenhagen (C) are incorporated. Notes on the habitats are given and the pertinent phytosociological units indicated. Some morphological and anatomical characters are commented upon briefly.
    Repository Name: National Museum of Natural History, Netherlands
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  • 49
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    New taxa and combinations in Rutaceae (1977)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.444 (1977) nr.1 p.471
    Details
    Publication Date: 2015-05-08
    Description: New taxa and combinations are published here in anticipation of the revision of the Rutaceae-Pilocarpinae to be published in the near future (thesis, and in Flora Neotropica). Two new combinations of species excluded from subtribe Pilocarpinae are added.
    Repository Name: National Museum of Natural History, Netherlands
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  • 50
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    Studies on the flora of the Guianas 14. New taxa and combinations in Sorocea (Moraceae) and a key to its species (1983)
    In:  Miscellaneous publications of the University of Utrecht Herbarium (1572-6592) vol.1 (1983) nr.1 p.381
    Details
    Publication Date: 2015-05-08
    Description: The 16 recognized species of Sorocea are listed with their synonyms and distribution. Two new taxa are described: S. steinbachii C.C. Berg and S. hirtella Mildbread ssp. oligotricha Akkermans & Berg. Three new combinations are made: S. muriculata Miquel ssp. uaupensis (Baillon) C.C. Berg, S. trophoides W. Burger ssp. rhodorachis (Cuatrecasas) C.C. Berg, and S. sprucei (Baillon) Macbride ssp. saxicola (Hassler) C.C. Berg. A key to the species is presented.
    Repository Name: National Museum of Natural History, Netherlands
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  • 51
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    Bryophytes collected during a Dutch botanical East Greenland expedition to the Angmagsslalik area in 1966 (1968)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.304 (1968) nr.1 p.340
    Details
    Publication Date: 2015-05-08
    Description: From a bryological point of view Greenland is not well known in detail. Unlike Siberia or Arctic America, it is not known through a few large collections, but through multitudes of mostly relatively small gatherings. In this arctic island that is almost 2000 miles long and extends from below 60° N.lat. to nearly 84° N.lat., travel and logistics are difficult. Consequently no over-all study of the whole island has been made, although many collections have been achieved through casual or intensive studies of small areas. Like the other contributions to the knowledge of the bryoflora of Greenland this paper will only deal with a rather limited area; the Angmagssalik district on the East coast of Greenland, ranging from 65° N.lat. to 67°20' N.lat. In 1887 Lange and Jensen published the first and until now the only comprehensive review of specimens and publications on the Musci of Greenland. In their paper the first moss collection from the Angmagssalik area was reported, made in 1884-1885 in the course of ethnographical studies by Gustav Holm (Sphagnum girgensohnii and Polytrichum juniperinum), the first European to visit this part of East Greenland.
    Repository Name: National Museum of Natural History, Netherlands
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  • 52
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    Taxonomy and pollen morphology of the Caltha leptosepala complex (1969)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.312 (1969) nr.1 p.16
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    Publication Date: 2015-05-08
    Description: Contrary to Europe, with only one Caltha species, North America has at least three species of this genus. These are the polymorphic C. palustris L., also widely distributed in Europe, the floating aquatic C. natans Pall, and the polymorphic C. leptosepala-biflora group. Two previous papers (Smit 1967, 1968) dealt with taxonomic aspects of C. palustris, that in North America were not essentially different from those of European material.
    Repository Name: National Museum of Natural History, Netherlands
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  • 53
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    A new Protium from Suriname (1950)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.106 (1950) nr.1 p.69
    Details
    Publication Date: 2015-05-08
    Description: Protium Pullei Swart n.sp. Arbor circ. 12 m alta. Ramuli robusti 4 mm diam. teretes glabri fusci lenticellis oblongis ferrugineis muniti. Folia trifoliolata 17 (16—21) cm longa glabra, petiolis robustis semiteretibus 4.5 cm longis basi incrassatis demum transverse rimosis, petiolulis semiteretibus robustis utrinque subincrassatis 1 cm longis sed terminalibus 2.25 cm longis, foliolis oblongo-ellipticis II (7.5—13) cm longis 5 (3.75—5.5) cm latis, apice abruptius acuminatis, acumine sublineari 8 (5—10) mm longo 2.5 (2—3) mm lato, basi cuneata, margine integro, coriaceis utrinque nitidis laevibus supra glaucescentis infra viridis, nervis secundariis utrinque II, nervis prim. et sec. utrinque prominentibus. Inflorescendae axillares breves pauce ramosae pauciflorae circ. 1 cm longae. Ramuli teretes striati cum pedicellis teretibus flore aequilongis bracteis bracteolisque triangularibus obtusis densiuscule puberulis. Flores 5-meri glabri. Calyx cupuliformis lobis oblongo-triangularibus acutis tubo aequilongis. Petala valvata oblongo-triangularia acuto apiculo inflexo carnosa. Stamina 10. Discus 10-lobis glaber. Pistillum glabrum, ovario late ovoideo stigmate 5-lobo coronato. Type: Maguire 24784 in herb. NY, 17 Sept. 1944, Suriname, Tafelberg, mixed transition high-low bush, 5 km S.W. of Savanna I.
    Repository Name: National Museum of Natural History, Netherlands
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  • 54
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    Rhodobrium roseum (Hedw.) Limpr. in Zuid-Limburg; enkele oecologische asptecten (1975)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.426 (1975) nr.1 p.124
    Details
    Publication Date: 2015-05-08
    Description: The author reports the discovery of the moss Rhodobryum roseum (Hedw.) Limpr. in the municipality of Wijlre in the extreme south of the Dutch province of Limburg. This is the first certain find from this area. See distribution map – fig. 2. Rhodobryum occurs on a steep part with a grade of about 30° of a north-facing hillside which borders the valley of the rivulet Geul. This steep part originated by specific land use for several centuries and it forms a part of a pasture which lies below it and is incidentally grazed by cattle. Above the locality a forest stretches towards the hill top. The habitat of Rhodobryum roseum receives no direct sunshine and the microclimatological situation can be defined as open shade. The air humidity is constantly rather high. The subsoil consists of calcareous deposits of Upper-Senone age. The pH measured at a depth of ca. 5 cm. in the soil is about 7-8. The altitude of the locality is about 125 m. above sea level.
    Repository Name: National Museum of Natural History, Netherlands
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  • 55
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    Chromosome numbers of some Angiospermae collected in Cameroun and the Ivory Coast (1969)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.313 (1969) nr.1 p.306
    Details
    Publication Date: 2015-05-08
    Description: The chromosome numbers of 16 species of Angiosperms, collected in Cameroun and the Ivory Coast, were determined. The numbers given for 14 species are new, in the remaining species the results of other authors could be confirmed.
    Repository Name: National Museum of Natural History, Netherlands
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  • 56
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    A Biosystematic Study of Neohattoria herzogii (Hatt.) Kamim (1981)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.509 (1981) nr.1 p.23
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    Publication Date: 2015-05-08
    Description: Neohattoria Kamim. is a monotypic genus of the Jubulaceae (= Frullaniaceae) with a single species, N. herzogii (Hatt.) Kamim., known from central to northern Japan and the southern part of the Kurile Islands. The present genus was segregated from Frullania by Kamimura (1961; sub. nom. Hattoria Kamim. nom. illeg., non Schust., 1961) on the basis of the branching type, the shape of the first leaf and underleaf on branch, the total lack of secondary pigmentation, the uniform cell structure of the stem in cross section, and the strongly toothed leaf lobes. The generic concept of Neohattoria was greatly expanded by Schuster (1970), who included eight species and classified them into two subgenera, subgen. Neohattoria (with a single species) and subgen. Microfrullania Schust. (with seven species); however, Hattori et al. (1972) transferred all species of subgen. Microfrullania to a newly segregated genus Schusterella Hatt. et al., thus retaining the monotypic status of Neohattoria. As already described and illustrated by Hattori (1955), Kamimura (1961), Mizutani (1961), Ladyzhenskaja (1963), Schuster (1970), and Hattori et al. (1972), Neohattoria herzogii is closely related to species of both Jubula and Frullania. Regarding the taxonomic desposition of Neohattoria, Mizutani (1961) and Mizutani & Hattori (1969) placed it with Jubula in a subfamily Jubuloideae of Lejeuneaceae and Hattori et al. placed it in Jubulaceae (s. lat.). But, Kamimura (1961), Schuster (1970, 1979), and Guercke (1978) placed it more close to Frullania, e.g. in a subfamily Frullanioideae of Jubulaceae (s. lat.); more recently, Asakawa et al. (1979b), admitting three distinct families, Jubulaceae, Frullaniaceae, and Lejeuneaceae, placed Neohattoria and Jubula in the Jubulaceae (s. str.) but Frullania and Schusterella in the Frullaniaceae.
    Repository Name: National Museum of Natural History, Netherlands
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  • 57
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    In memoriam Dr. P.A. Florschütz (1923-1976) (1976)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.462 (1976) nr.1 p.398
    Details
    Publication Date: 2015-05-08
    Description: Op 27 mei 1976 overleed Dr. P.A. Florsohütz op de leeftijd van 53 jaar. Het bericht van zijn overlijden kwam zelfs voor diegenen die gedurende de laatste weken van zijn leven regelmatig kontakt met hem hadden onverwacht. Tijdens de middelbare-sohooltijd kwam zijn interesse in de biologie al duidelijk naar voren. Zowel plant als dier had zijn belangstelling. Na het behalen van het diploma HBS liet Florsohütz zich als student in de biologie aan onze universiteit in schrijven en legde in 1945 bet kandidaatsexamen af. Spoedig daama werd hij kandidaat-assistent bij Prof. Pulle, hoogleraar-directeur van het toenmalige Botanisch Museum en Herbarium. Hét doctoraal-examen werd in 1949 afgelegd.
    Repository Name: National Museum of Natural History, Netherlands
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  • 58
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    Die Flechten der Gletscherinsel Isla Persa (Bernina, Schweiz) (Flechten der Alpinstufe) (1976)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.476 (1976) nr.1 p.619
    Details
    Publication Date: 2015-05-08
    Description: Floristische und soziologische Beobachtungen über die Flechtenvegetation von Isla Persa, einer Gletscherinsel in der SO-Schweiz (Berainagebiet), in Höhe von 2450-2850 m, werden beschrieben. Die Artenliste nennt 156 Arten. Die interessantesten Funde werden kurz besprochen. Deutlich höher als bekannt aus der Literatur wurden gefunden: Cladonia cyanipes auf 2550 m. Coniocybe furfuracea auf 2650 m. Leprocaulon microscopicum auf 2500 m. Weiter werden einige Flechtengesellschaften auf Isla Persa kurz besprochen: a) epiphytisch: Parmeliopsidetum ambiguae Hilitzer 1925 b) epilithisch: Umbilicarietum cylindricae Frey 1923 Umbilicarietum microphyllae Frey 1923 Sporastatietum testudineae Frey 1922 Sporastatietum polysporae Frey 1922 Ramalinetum capitatae Frey 1923 Umbilicarietum ruebelianae Frey 1925 Dimelaenetum oreinae Frey 1923 Umbilicarietum deustae Frey 1933 c) terrestrisch: Stereocauletum alpini Frey 1937 ? Cladonietum alpestris Frey 1937 Thamnolietum vermicularis Gams 1927 Lecideetum demissae Frey 1923
    Repository Name: National Museum of Natural History, Netherlands
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  • 59
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    Fundamentele vragen van de bijzondere plantkunde en de plantengeografie (1950)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.98 (1950) nr.1 p.1
    Details
    Publication Date: 2015-05-08
    Description: Zeer geachte Toehoorderessen en Toehoorders, Bij het beginnen van een wetenschappelijk onderzoek zal meestal degene die zich daaraan gezet heeft, allereerst het antwoord dienen te vinden op enkele fundamentele vragen. Zijn deze primaire vragen beantwoord, dan is de weg gebaand voor verder onderzoek en voor algemene theoretische beschouwingen. Deze fundamentele vragen zijn echter niet voor elke onderzoeker en ook niet voor elk onderzoek in een zelfde tak van wetenschap steeds gelijk. Dit hangt af van vele factoren, zoals: uiteindelijk doel van de studie, aard van het materiaal, geaardheid vooral van de onderzoeker, enz. Vandaag wil ik met U behandelen de hoofdvragen, die zich bij mij, voor de aan mij toevertrouwde onderdelen van de botanie steeds op de voorgrond plaatsen en de wijze waarop ik die beantwoorden pleeg te interpreteren voor het verdere onderzoek. Hierdoor zal ik tevens de gelegenheid hebben, om aan te stippen in welke richting wij op het gebied van de bijzondere plantkunde en de plantengeografie nog onderzoekingen kunnen verrichten, die ons inzicht in het geheel aanmerkelijk kunnen verruimen. Voor ik met mijn eigenlijke onderwerp begin, moet ik toch iets zeggen over wat „bijzondere plantkunde” is. Ik zal er niet te veel over uitweiden, daar, zoals Koningsberger en Reinders in het voorwoord van het eerste deel van het Leerboek der Algemeene Plantkunde terecht opmerken, de scheiding tussen „algemene” en „bijzondere” plantkunde uiteraard onscherp is. Volgens de letter van de gebruikelijke terminologie zou eigenlijk alles wat niet „algemeen” is thuis horen onder de bijzondere plantkunde. Zover wil ik niet gaan, want dat zou mijn taak wel heel omvangrijk maken en afgezien van het feit dat het buiten mijn kunnen zou komen te vallen, denk ik ook dat mijn collega voor de algemene plantkunde ernstige bezwaren zou maken indien ik datgene van de plantenphysiologie dat zeker niet algemeen is te noemen, voor mijzelf zou gaan opeisen. Ik wil daarom beginnen de physiologie, hoe bijzonder deze hier en daar ook moge zijn, maar onmiddellijk in zijn geheel bij de algemene plantkunde te plaatsen. Voor de rest zou ik mijn bovengenoemde definitie, dus „bijzonder” is alles wat niet „algemeen” is, in grote trekken willen volgen, met dien verstande dat ik mij natuurlijk wil houden aan de veelal gebruikelijke taakverdeling, zodat b.v. de „algemene” morphologie en anatomie van de Angiospermen, die in feite in het plantenrijk als geheel, „bijzonder” is, bij de „algemene plantkunde” wordt ondergebracht. De speciale en vergelijkende morphologie van deze groep reken ik echter zeer zeker tot de mij toegewezen tak van wetenschap. Ook de afgrenzing met de genetica is niet scherp. Indien men elk onderzoek waarbij niet uitsluitend op het phaenotype maar ook op het genotype gelet wordt, tot de genetica wil rekenen, dan zal de betrekkelijk jonge experimentele plantensystematiek of biosystematiek geen deel kunnen uitmaken van de bijzondere plantkunde. De genetici zullen het mij wel niet euvel duiden, dat ik ook deze tak van onderzoek laat staan bij de bijzondere plantkunde, waaruit zij is voortgekomen en waarvoor zij van zoveel betekenis is.
    Repository Name: National Museum of Natural History, Netherlands
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  • 60
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    A new Xylopia from Suriname (Annonaceae) (1952)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.109 (1952) nr.1 p.243
    Details
    Publication Date: 2015-05-08
    Description: Xylopia surinamensis R. E. Fr. n. sp. — Ramuli novelli dense aureo-ferrugineo-sericei, vetustiores plus minus glabrescentes et cortice densissime lenticellifero punctato vestiti; internodia 0,5—1 cm longa. Foliorum petiolus sericeo-tomentosus, 5—7 mm longus; lamina rigida, anguste lanceolata, basi rotundato-truncata, apicem versus sensim longeque attenuata, summo apice obtusa, supra ab initio glaberrima sed densissime verruculoso-punctata, subtus dense argenteosericea, 8—11 cm longa et 2—2,5 cm lata; costa supra valde impressa glaberrima, subtus prominens teres; nervi secundarii cum venulis vix conspicui. Flores in inflorescentiis densis nonnulli; bracteae numerosae, late ovatae, 1,5—2 mm longae. Sepala fere omnino coalita, calycem cupuliformem semiglobosum argenteo-sericeum 2—3 mm altum et 5—6 mm latum formantia. Petala exteriora linearia obtusa, extus argenteo-sericea, circ. 13 mm longa et 2 mm lata, prope basin subito dilatata; interiora linearia, acuta, quadrangulari-prismatica, utrinque cinereo-puberula, 12 mm longa et 1—1,2 mm crassa. Staminum filamenta 0,2 mm longa; antherae circ. 1 mm longae, locellatae, connectivi discus glaber; stamina exteriora plus minus sterilia. Pistilla numerosa (fere 30); ovaria dense sericea, circ. 1 mm longa, styli 1 mm et stigmata 1 mm longa. (Fructus ignotus). Suriname: Boschreserve, Sectio O (florifera Junio 1944. — Wood Herbarium Surinam No. 139). Typus speciei in Herb. Utrecht).
    Repository Name: National Museum of Natural History, Netherlands
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  • 61
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    Revision of the genera Myrianthus and Musanga (Moraceae) (1976)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.434 (1976) nr.1 p.471
    Details
    Publication Date: 2015-05-08
    Description: The African members of the Conocephaloideae are revised. Musanga comprises two species: M. cecropioides and M. leo-errerae. In Myrianthus seven species are recognized: M. arboreus, M. holstii, M. preussii (with ssp. preussii and ssp. seretii), M. libericus, M. serratus (with var. serratus and var. letestui), and M. cuneifolius. M. serratus var. letestui is described as new.
    Repository Name: National Museum of Natural History, Netherlands
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  • 62
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    Chromosome numbers of flowering plants in the Netherlands II (1966)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.268 (1966) nr.1 p.541
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    Publication Date: 2015-05-08
    Description: The chromosome number of 157 species of Angiospermae occurring in the Netherlands is dealt with.
    Repository Name: National Museum of Natural History, Netherlands
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  • 63
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    Studies on Colombian cryptogams. IIB. Hepaticae – Oil body structure and ecological distribution of selected species of tropical Andean Jungermanniales (1977)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.479 (1977) nr.1 p.394
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    Publication Date: 2015-05-08
    Description: Oil bodies 7-12 in upper leaf cells, 10-20 in elongated basal leaf cells; globose to ellipsoid, 3-7(-10)x3-5 μm; colourless, coarsely segmented, consisting of c. 15-30 aggregated droplets (Colombia, Boyacá, páramos NW of Belén, Cabeceras Q. El Toral, 3765 m, Cleef 2292e; Ecuador, páramos de El Angel, 17 km. S. of Tulcán, 3350 m, Gradstein, Lanier & Weber s.n.). The presence of segmented oil bodies in Colura patagonica is remarkable because previous studies of living Colura (from Japan) reported homogeneous oil bodies (cf. Schuster & Hattori 1964; Inoue 1974).
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  • 64
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    Distribution maps of Pacific plants (1966)
    In:  Pacific Plant Areas (0373-4293) vol.2 (1966) nr.1 p.53
    Details
    Publication Date: 2015-09-18
    Description: Name: Wahlenbergia marginata (Thunb.) DC. Monogr. Camp. (1830) 143. Family: Campanulaceae.
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  • 65
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    Bibliography of Pacific and Malesian plant maps of Phanerogams. First Supplement (1966)
    In:  Pacific Plant Areas (0373-4293) vol.2 (1966) nr.1 p.7
    Details
    Publication Date: 2015-09-18
    Description: Alangium LAMK.—M. M. J. van Balgooy, Pac. Plant Areas 2: map 72. Complete; Old World, also incl. Indo-Malesia, E. Australia, Pacific (Solomons, New Caledonia, New Hebrides, Fiji); delineated except in Africa and Madagascar, localities indicated only in the Pacific, species density; monograph.
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  • 66
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    Palaeobotany of the Mesophytic III. Plant microfossils from the Upper Bunter of Hengelo, The Netherlands (1966)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.262 (1966) nr.2 p.316
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    Publication Date: 2015-05-08
    Description: The Upper Hunter palynological assemblage described includes 54 species, assigned to 29 genera. Seven genera (Scabratisporites, Guttatisporites, Lapposisporites, Pseudogravisporites, Paralundbladispora, Taeniaepollenites and Tubantiapollenites) and 39 species are new; three generic descriptions are emended (Apiculatasporites, Colpectopollis and Angustisulcites) and three new combinations are proposed. Bisaccate pollen grains average 84 %; within this group no Upper Permian elements could be demonstrated. The assemblage is compared with other European Lower and Middle Triassic assemblages; there are no close similarities to assemblages outside Europe.
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  • 67
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    Notes on the Plagiochilaceae, IX. A Review of the Genus Plagiochila (Dum.) Dum. (Hepaticae) in the Galapagos Islands (1980)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.503 (1980) nr.1 p.7
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    Publication Date: 2015-05-08
    Description: El género Plagiochila (hepatica) esta representada en las Islas Galapagos por ocho (8) especies diferentes: P. bursata (Desv.) Lindenbg., P. galapagona Inoue, P gradsteinii Inoue, P. guilleminiana Mont., P. inouei Grolle, P. scabrifolia Inoue, P. spinifera Ångstr. y P. subplana Lindenbg. El endemismo en este género es más alto que en otros géneros de las hepaticas, con cinco (5) especies que comienzan a conocerse solamente de los Galapagos ( P. galapagona, gradsteinii, scabrifolia, inouei, y spinifera). Las otras tres (3) son comunes y ampliamente distribuidas a lo largo de la America tropical. La mayoría de las especies estan restringidas a las zonas altas-húmedas de vegetación de las Islas Galapagos (matorrales de Zanthoxylum, Miconia y pampa) excepto P. guilleminiana muy común, la cual puede presentarse en la zona seca de transición de bosque. La más amplia variación de Plagiochila ha sido vista en Isabela (Cerro Azul), San Cristobal y Santa Cruz.
    Repository Name: National Museum of Natural History, Netherlands
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  • 68
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    The generic identity of Polypodium banaense (1983)
    In:  Miscellaneous publications of the University of Utrecht Herbarium (1572-6592) vol.1 (1983) nr.1 p.43
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    Publication Date: 2015-05-08
    Description: The species Polypodium banaense C.Chr. is transferred to Crypsinus. The recognition of a genus Phymatopteris Pic. Ser. (= Phymatopsis J.Sm.) separate from Crypsinus is discussed.
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  • 69
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    A scanning electron microscopic study of the seed coat structure of Curtia Chamisso & Schlechtendahl and Hockinia Gardner (Gentianaceae) (1983)
    In:  Miscellaneous publications of the University of Utrecht Herbarium (1572-6592) vol.1 (1983) nr.1 p.33
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    Publication Date: 2015-05-08
    Description: The six species of Curtia, including a hitherto undescribed species published here, as well as the monotypic genus Hockinia can be distinguished from each other by the seed coat structure. The anticlinal walls and the cuticle provide the most useful information. Curtia tenuifolia appears to be a complex species, but subsp. tenella can be readily separated from this complex by the seed coat structure. Heterostyly has been found in C. tenuifolia subsp. tenuifolia, C. obtusifolia, and Hockinia montana, but differences in seed coat structure can not be correlated with long-, short-, and equal-styled flowers. The differences in seed coat structure, the length of the seeds, and the number of cells per seed plead for maintaining Hockinia (closely related to Curtia) as a distinct genus. One new species of Curtia is described and a new combination is made.
    Repository Name: National Museum of Natural History, Netherlands
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  • 70
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    Studies in Annonaceae VI. A leafanatomical survey of genera of Annonaceae in the Neotropics (1983)
    In:  Miscellaneous publications of the University of Utrecht Herbarium (1572-6592) vol.1 (1983) nr.1 p.17
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    Publication Date: 2015-05-08
    Description: SETTEN, A. K. van & KOEK-NOORMAN, J.: Studies in Annonaceae. VI. A leafanatomical survey of genera of Annonaceae in the Neotropics. — Bot. Jahrb. Syst. 108: 17—50. 1986. — ISSN 0006-8152. Within the scope of the multidisciplinary research project on systematics of Annonaceae, a survey of the leafanatomical features and their distribution in the neotropical Annonaceae is presented. The studied specimens form a rather homogeneous group, as may appear from the family description given here. A detailed study of the leafanatomical features reveals, that differences are mainly found in the indument, the position and contents of the idioblasts, the structure of the primary vein, the type of crystals in the epidermal cells, and the type of sclereids. Based on character states, phenetic similarities and differences are discussed and compared with the classifications of FRIES (1959) and WALKER (1971).
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  • 71
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    Studies on the flora of the Guianas 20. The Dorstenia species (Moraceae) of south-eastern tropical America (1983)
    In:  Miscellaneous publications of the University of Utrecht Herbarium (1572-6592) vol.1 (1983) nr.1 p.133
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    Publication Date: 2015-05-08
    Description: One new species of Dorstenia from Brazil is described: D. carautae C.C. Berg, and four new combinations are made: D. cayapia Vellozo subsp. asaroides (Hooker) C.C. Berg, D. cayapia Vellozo subsp. paraguariensis (Hassler) C.C. Berg, D. cayapia Vellozo subsp. vitifolia (Gardner) C.C. Berg, and D. ramosa (Desvaux) Carauta, Valente & Sucre subsp. dolichocaula (Pilger) C.C. Berg. A list of and a key to the 22 Dorstenia species distinguished in south-eastern tropical America are presented, together with synonymy and distributional data.
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  • 72
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    Afscheidscollege (1950)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.97 (1950) nr.1 p.1
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    Publication Date: 2015-05-08
    Description: Dames en Heren, In een universitair blad kwam onlangs de mededeling voor, dat aan een hoogleraar, die zich in dezelfde moeilijkheid bevindt als ik, nl. dat hij in de loop van deze cursus 70 jaar is geworden, een afscheidscollege zou worden aangeboden. Ik vond dat een sympathiek plan. Als men met college geven, ondanks de daaraan verbonden bezwaren, de 70-jarige leeftijd heeft gehaald, is het werkelijk geen overbodige weelde dat een ander de taak voor deze laatste keer van hem overneemt.
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  • 73
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    Obituary Peter Arnold Florschütz (1923-1976) (1977)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.461 (1977) nr.1 p.395
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    Publication Date: 2015-05-08
    Description: On 27 May 1976 Peter Arnold Florschütz, bryologist, died at the age of only 53 at De Bilt, Netherlands. Only six weeks prior he had been hospitalized as a result of kidney cancer. His untimely death came as totally unexpected and shocking news to his friends and colleagues all over the world, many of whom had seen him in excellent health the year before at the Botanical Congress in Leningrad. He was a lector of botany and curator of the cryptogamic herbarium at the Institute for Systematic Botany and acting director of the Botanical Gardens of the University of Utrecht, the same institution where he had studied biology from 1941 to 1949. In his professional capacity he had held positions at the Institute for Systematic Botany from 1946 until 1949 as student-assistant and from 1949 on as staff member. Initially under the directorship of his teacher in plant systematics Professor A. A. Pulle, and from 1948 until 1970 under Professor J. Lanjouw’s leadership, the “Flora of Suriname” was being tackled by the staff of the institute. Thus, as a young graduate student, Florschütz was assigned the revision of the mosses of Suriname; a comprehensive and difficult task, because in those post-war years there was a vacuum in European exotic bryology. The heydays, with Herzog in Germany, Brotherus in Scandinavia, Dixon in Great Britain and Thériot and Camus in France were over. At the beginning, Florschütz was entirely dependent on Brotherus’ treatment of the world’s mosses in Engler and Prantl, “Die natürlichen Pflanzenfamilien.” In those years he had run over the leaves of this book for weeks on end in a typical posture, like he used to tell: folded in a chair, book on his lap.
    Repository Name: National Museum of Natural History, Netherlands
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  • 74
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    A palynological study in Geonomoid palms (1966)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.257 (1966) nr.1 p.266
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    Publication Date: 2015-05-08
    Description: In a previous palynological study in Cocoid palms the present authors (Punt and Wessels Boer, 1966) were able to demonstrate a rather strong but not absolute correlation between the pollen types and the staminate flower types within the genus Attalea in the broad sense. The existence of partly apparently primitive, partly very advanced flower types within the otherwise close related group of Geonomoid palms made it worthwhile to investigate the same feature in this group. The Geonomoid palms are usually considered to comprise 7-9 genera of monoecious Arecoid palms which share a large number of characteristics (Burret, 1930; Moore, 1966). The group is very obviously a most natural one. The generic distinctions are mainly based on the flower morphology, notably on differences found in the androeceum and pistil.
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  • 75
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    Linné’s views on the hierarchy of the taxonomic groups (1953)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.117 (1953) nr.1 p.242
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    Publication Date: 2015-05-08
    Description: It is the fate of most historic personalities that in the course of time their work sinks almost completely into oblivion, and that the few lingering reminiscences of their achievements are transmitted to later generations in the form of second- or third-hand quotations, usually mixed with more or less anecdotic episodes from their life. It must be admitted that LINNÉ occupies in this respect a comparatively favourable position, for most educated people will remember that they heard in their school days of at least three things which are credited to him, in the first place that he produced a classification of the plant kingdom which is based on the number of stamens and carpels, the so-called sexual system, in the second place that he was the first who consistently applied the binomial nomenclature, i.e. the custom to designate an organism by a combination of two names, viz. a generic and a specific one, and thirdly that he was the originator of the pronouncement “Species to numeramus quot diversae formae in principio sunt creatae” (We count so many species as in the beginning different forms were created). Other achievements of LINNÉ may have been of greater importance, but it are these three things for which he is most generally remembered. The pronouncement quoted above, which means that the groups of individuals which form the species are descended from ancestors that owed their origin to an act of creation, derives its historic importance from the part it played in the debates on the theory of evolution. As it implies that the species are constant, it became the watchword of the antagonists. It is, however, rather strange that this pronouncement has so often been quoted, for it is found in LINNÉ’s earlier works only, and was in the later ones replaced by another statement that flatly denies the constancy of the species.
    Repository Name: National Museum of Natural History, Netherlands
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  • 76
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    Campylopus introflexus (Hedw.) Brid. en C. pilifer Brid. in Nederland (1977)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.465 (1977) nr.1 p.157
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    Publication Date: 2015-05-08
    Description: Campylopus introflexus, a new neophyte in western Europe, occurs throughout the Netherlands. After its first appearance in 1961, it is now a common moss. It grows as a pioneer on acid, well-drained places. The differences with C. pilifer are summarized. The occurrence of the latter in the Netherlands could not be affirmed.
    Repository Name: National Museum of Natural History, Netherlands
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  • 77
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    Project Systematics of Annonaceae (1983)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.516 (1983) nr.1 p.1
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    Publication Date: 2015-05-08
    Description: Recently a multidisciplinary investigation program on the systematics of Annonaceae was started at Utrecht with special emphasis on the Neotropics. This project will be carried out largely within the framework of the UNESCO-project Flora Neotronica. The first goal is to provide a modern classification of the family as a whole, the second is the publication of a series of monographs for Flora Neotropica. The project has been planned and started in close consultation with leading botanists on the Neotropical flora. The Annonaceae are a family of pantropical distribution with between 2000 and 2500 species in ca. 130 genera as presently understood. In the Neotropics the family is represented by ca. 750 species and 35 genera. It is a family of trees, shrubs, and lianas. Its place is within the order of the Magnoliales and its supposedly closest relative is the family of the Myristicaceae. The Annonaceae, although generally considered primitive in many features, nevertheless offer a number of specialized features as well This makes it a promising object using various kinds of comparative morphological, karyological, and anatomical data. Besides, many species are of medicinal or commercial value, such as various species of Annona and Rollinia, the fruits of which are commonly eaten in most countries of Central America and South America; the Soursop (Annona muricata) is widely cultivated throughout the tropics.
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  • 78
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    Eine neue Campylopus-Art von den Galapagos Inseln (1978)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.467 (1978) nr.1 p.61
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    Publication Date: 2015-05-08
    Description: Campylopus galapagensis J.-P. Frahm & Sipman spec. nov. is described. It is closely related to C. pilifer Brid., from which it differs mainly by the presence of substereids in the ventral layer of the costa. It is endemic on the Galapagos Islands, where it occurs frequently from sea level to the highest summits at 1500 m.
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  • 79
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    Lophozia perssonii Buch & S. Arnell in Nederland (1976)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.432 (1976) nr.1 p.119
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    Publication Date: 2015-05-08
    Description: The first record of Lophozia perssonii for the Netherlands, from an old and deep limestone-quarry near Cadier en Keer, S. Limburg. Sterile L. perssonii grows here as a pioneer on shaded, calcareous tufa blocks together with Leiocolea badensis and other bryophytes. The differences with related species are discussed, and a description of the ecology is given.
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  • 80
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    Chromosome numbers and seedling morphology of some Angiospermae collected in Brazil (1969)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.316 (1969) nr.1 p.74
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    Publication Date: 2015-05-08
    Description: The chromosome numbers of 31 species of Angiospermae collected in S. Brazil were determined. Of these species 5 were studied before, the other numbers are new, 11 are first counts for genera and one even for a family. Some notes on the cytology and morphology are added.
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  • 81
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    Tortula grandiretis Broth, in the Netherlands and in Turkey (1978)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.473 (1978) nr.1 p.255
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    Publication Date: 2015-05-08
    Description: Tortula grandiretis Broth., differing from T. muralis Hedw. mainly in the larger, quite smooth lamina cells, is reported from three localities in the SW-Netherlands, where it occurred on open, sandy or clayey, brackish soil on recently enclosed mud flats or salt-marshes. It is also reported from one locality in Turkey. It was formerly known only from Turkestan (U.S.S.R.).
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  • 82
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    Erismadelphus (1953)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.114 (1953) nr.1 p.594
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    Publication Date: 2015-05-08
    Description: Erismadelphus Mildbr. is remarkable because it is the only African genus of the Vochysiaceae, a family represented in tropical America by no less than 5 genera and 180 species. Erismadelphus was discovered in 1913 by Prof. J. MILDBREAD and has hitherto been represented by only one species: E. exsul Mildbr. Recent examination of the African collections has, however, revealed the existence of two other taxa. Unfortunately the type of E. exsul (Mildbraed s.n. from Elon, French Cameroons) was destroyed at Berlin during the 1939-45 war and no duplicates or cotypes are known to exist. In response to an enquiry Prof. MILDBREAD, to whom we are very grateful, informed one of us that in his view Corbisier 1362 from Eala in Belgian Congo was identical with his original type. Prof. MILDBRAED and KEAY have, in fact, together examined Corbisier 1362 in the Herbarium of the Jardin Botanique de l’Etat at Bruxelles through the courtesy of Prof. ROBYNS. Duplicates of Corbisier 1362 are at Kew and Paris, they agree in every respect with MILDBRAED’s original description and figure and we therefore propose that this specimen be adopted as the neotype (lectotype).
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  • 83
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    Studies on the flora of the Guianas. II. A new species of Asterophorum (Tiliaceae) from Suriname (1983)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.524 (1983) nr.1 p.377
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    Publication Date: 2015-05-08
    Description: A new species of Asterophorum, A. mennegae, is described from the Sipaliwini Savanne (Suriname). The position of Asterophorum within the family is briefly reviewed, and a key to the 2 species is given.
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  • 84
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    Studies on Lejeuneaceae subfam. Ptychanthoideae VI. A revision of Schiffneriolejeunea sect. Saccatae from Asia (1981)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.493 (1981) nr.1 p.71
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    Publication Date: 2015-05-08
    Description: The originally monotypic eastern Malaysian genus Schiffneriolejeunea Verdoorn 1933 has now become a widespread, pantropical group of about fifteen species by the inclusion of species from the genus Ptychocoleus Trev. nom. illeg. Six species are known from Asia, three of which constitute the sect. Saccatae (Verdoorn) Gradst. & Terken comb. nov. These are the widespread Schiffneriolejeunea tumida (Nees) Gradst., the eastern Malaysian S. cumingiana (Mont.) Gradst. and S. nymannii (Steph.) Gradst. & Terken comb. nov. Schiffneriolejeunea tumida is a rather polymorphic species in which two not sharply defined varieties may be distinguished: S. tumida var. tumida with more or less involuted leaf margins, and S. tumida var. haskarliana (Gott.) Gradst. & Terken comb. nov. with plane margins.
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  • 85
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    Pollen morphology of some European Rosaceae (1966)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.260 (1966) nr.1 p.290
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    Publication Date: 2015-05-08
    Description: In this preliminary investigation attention was paid to pollen morphology of West-European species of the Rosaceae. Some new terms were used like fastigium, endocingulus etc. The terminology of Iversen and Troels-Smith has been followed in addition to improvements by Erdtman. A key is given to the types and subtypes for the use of pollen analytical investigators. Sanguisorba officinalis appeared to be always 3-colporate and not 6-colporate.
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  • 86
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    On the wood anatomy of the tribe “Olmedieae” (Moraceae) and the position of the genus Olmedia R. & P (1977)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.437 (1977) nr.1 p.1
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    Publication Date: 2015-05-08
    Description: The structure of the wood of the genera Castilla, Helicostylis, Maquira, Naucleopsis, Olmedia, Perebea and Pseudolmedia, considered to belong in the Olmedieae (cf. Berg 1972) is described. The diversity in anatomical structure between the genera is small, and it is hard to distinguish Maquira, Perebea and Pseudolmedia from each other. Castilla can be recognized by its thinwalled and wide-lumined fibres, Helicostylis by its parenchyma distribution, Naucleopsis (usually) by its more numerous vessels with a smaller diameter. A more marked difference is shown by the monotypic genus Olmedia with apotracheal banded parenchyma instead of the paratracheal aliform to confluent-banded parenchyma of the other genera. Septate fibres, which are characteristic for the other genera – some species of Helicostylis excepted – are nearly completely absent in Olmedia. This structural difference is considered as an argument in favour of the exclusion of Olmedia from the tribe Olmedieae (Berg 1977).
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  • 87
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    Life forms and life strategies in Nanocyperion communities from the Netherlands Frisian Islands (1980)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.488 (1980) nr.1 p.483
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    Publication Date: 2015-05-08
    Description: Nanocyperion communities (s.l.) are considered here as “warp-and-woof” communities; the Nanocyperion components are described separately as synusiae. On the Netherlands Frisian Islands, four main synusiae have been recognized. Raunkiaer life form spectra show few differences between the communities. Life strategy spectra of the Nanocyperion synusiae, based on systems for phanerogams (modified after Bakker 1966) and bryophytes, yield the clearest patterns. A comparison of the ecology of the communities and an interpretation of the spectra in terms of avoidance of stress or competition suggest that inundations and standing crop of the communities are the main factors determining the distribution of the synusiae. Winter inundations overrule the influence of differences in productivity level, which becomes prominent in drier situations.
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  • 88
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    Middle Triassic pollen and spores from the Lower Muschelkalk of Winterswijk (The Netherlands) (1968)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.307 (1968) nr.1 p.161
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    Publication Date: 2015-05-08
    Description: A palynological assemblage obtained from marly limestones of the Dutch Lower Muschelkalk is discussed. A qualitative analysis has disclosed its great resemblance to Upper Bunter (Röt) assemblages ; however, differences in quantitative composition were demonstrated. Utilizing palynological data new information can be added to the knowledge of the European Middle Triassic flora.
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  • 89
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    Phytogeographical relations in the North West European heath (1967)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.252 (1967) nr.1 p.630
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    Publication Date: 2015-05-08
    Description: The water economy, the mineral content of the soil, and human influence are the principal ecological factors governing the variation of the heath vegetation of a limited region. Sloping of the surface is also an important factor. In hilly country it is of a twofold nature: on the one hand the difference between high and low altitudes, based on the water economy, on the other hand differences in (micro-) climate. If the hills are higher, this results in greater climatic differences. In extremely oceanic and in boreal regions a rise in altitude of 100 m is sufficient for creating a noticeable decrease in temperature and an increase in precipitation, aerial moisture, and wind force. This results in the occurrence on the hills of heath communities that have their main distribution more to the North. The same observation was made by Gimingham (1961). On Slieve League on the Donegal coast (Ireland) Salix herbacea and Lycopodium selago occur in the heath at an altitude of 600 m, near Tongue on the Scottish north coast Dryas octopetala, Saxifraga oppositifolia, Alchemilla alpina and Thalictrum alpinum at an altitude of 60 m. West of Apeldoorn in the Netherlands are found extensive stretches of heath with abundant Vaccinium myrtillus and V. vitis-idaea at an elevation of 60-80 m, even on south-facing slopes. This is an area with high precipitation due to ascending air west of the hill ridge of the Eastern-Veluwe. Here the Vacciniums, elsewhere requiring the protection of the forest, can tolerate the habitat of the open heath (Stoutjesdijk, 1959; De Smidt, 1966). Higher elevation combined with north-facing slopes creates extreme conditions e.g. on Roc Trévézel (300—360 m) in Brittany, with Vaccinium myrtillus, Melampyrum pratense, Hymenophyllum wilsonii and Rhytidiadelphus loreus. These species are virtually lacking in the surrounding plains where the heath consists of such South Atlantic species as Erica cinerea, E. ciliaris, Ulex gallii, Lobelia urens, Lithospermum prostratum and Symethis planifolia.
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  • 90
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    Three new species and a new subspecies of Marcgravia and Souroubea (Marcgraviaceae) from Central America (1969)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.320 (1969) nr.1 p.197
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    Publication Date: 2015-05-08
    Description: Frutex epiphyticus, ramis quadrangularibus, angulis lenticellatis. Folia ramorum fertilium petiolis 2-5 mm longis, 1.5-2 mm latis; lamina chartacea vel subcoriacea, oblanceolato-oblonga vel interdum elliptico-oblonga, 9-14 cm longa, 3-4.5 cm lata, ápice acuminata, acumen 1-2 cm longum, basi attenuata, costa subtus prominente, nervis lateralibus supra et subtus prominentibus vel prominulis, glandulis hypophyllis aliquot patelliformibus vel foveolatis, parvis, 3-5 in folii parte inferiore oblique seriatis, aliis minutis, punctiformibus, nigricantibus, aequaliter dispersis. Flores in racemis umbelliformibus (20-) 30-45-floris; rhachis ad circa 1 cm longa; nectaria clavato-cucullata, stipitata, stipes 5-8 mm longus, cucullus 1-1.5 cm longus, circa 4-5 mm diametro, ore late-rotundata, margine plerumque recurvo, apiculata; pedicelli 5-7 cm longi, lenticellati; bracteolae sepaloideae, circa 1 mm longae, 2-3 mm latae; sepala suborbicularia vel reniformia, circa 2-3 mm longa, circa 4-5 mm lata, margine glandulosa; corolla oblongo-subconoidea, circa 1 cm longa, circa 4-5 mm diametro; stamina 18-33, filamentis applanatis, liberis, inaequalibus, in alabastro 4-6 mm longis, antheris linearibus, 3-5 mm longis, circa 1 mm latis, basi subsagittatis; ovarium circa 2-3 mm diametro, 6-11-loculare. Fructus globosus, circa 9 mm diametro, stylo persistenti ornatus. Typus : Costa Rica, vicinity of Vara Blanca, North slope of Central Cordillera, between Poás and Barba Volcanoes, alt. 1700 m, April 1938, Skutch 3762 (holotype US; isotypes GH, MO, NY, S). Paratypes; Costa Rica: Heredia: Cerro de las Caricias, North of San Isidro. Standley & Valerio 52202, 52248,52375 (US); Panama:Chiriquí: Boquetedistrict, Bajo Chorro, Davidson 398 (GH, US).
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  • 91
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    The Marine Algal vegetation of St. Martin, St. Eustatius and Saba (1968)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.308 (1968) nr.1 p.1
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    Publication Date: 2015-05-08
    Description: Although algology deals with a large group of plants, widespread and of a great morphological diversity, the history of this branch of botany is fairly young. Linnaeus (1753) listed in his Species Plantarum under the heading “Cryptogamia—Algae” only five genera of plants which are still accepted as algae at the present time. Under the same heading he also described a number of liverworts, lichens and sponges and a few other things.
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  • 92
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    Study of a peat profile on the Frisian Coast of the former “Zuiderzee” (1952)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.111 (1952) nr.1 p.250
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    Publication Date: 2015-05-08
    Description: The subject of this study are soil samples taken in the “Makkumer Waard”, a wide expanse of low-lying land, which follows the Frisian coast. Stratigraphical and palynological investigations showed that in the beginning of the Atlanticum the area lay below the level of the sea, but that gradually the influence of the sea decreased and peat formation became possible. From the transition from marine deposits to Sphagnum peat (— 4,55 m to — 3,50 m) we must conclude that there has been a temporary standstill in the transgression, or even a regression, in the middle of the Atlanticum. Towards the end of the Atlantic period a sudden marine transgression followed, which deposited a layer of sand and clay on the Sphagnum peat (— 3,50 m to — 3,30 m). Shortly before the beginning of the Subboreal (which probably sets in at — 3,10 m) an important regression began and an Eriophorum peat was formed directly on the clay (—3,30 m to —3.00 m). It is probable that the peat formation went on in the Subatlanticum, but the younger Sphagnum peat is no longer present, for a third marine transgression, which lead to the formation of the “Zuiderzee”, washed away the peat and deposited the younger sea sand. The data obtained from the Makkum profile proved to agree very well with the results of other investigators who worked in the area round the North-sea.
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  • 93
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    Joseph Gaertner and his Carpologia (1969)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.321 (1969) nr.1 p.216
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    Publication Date: 2015-05-08
    Description: Joseph Gaertner (1732-1791) was the first to develop a carpological taxonomy in his book De fructibus et seminibus plantarum (1788-1791). The scope and background of this work are discussed; its history is sketched on the basis of the Banks correspondence at the British Museum; the main sources of material are listed. A brief outline of Gaertner’s life is given, also mainly based on letters from him and his contemporaries to Joseph Banks.
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  • 94
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    Some cytological observations in the Loganiaceae III (1966)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.264 (1966) nr.1 p.490
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    Publication Date: 2015-05-08
    Description: Previously, the chromosome numbers of some species of Loganiaceae were dealt with (Gadella, 1961, 1962, 1963). The chromosome numbers of 7 species are reported in this paper, of which 4 species, all belonging to the genus Strychnos, had not been investigated cytologically before. The materials, kindly supplied to me by Dr. A. J. M. Leeuwenberg and by Ir. F. Breteler, were collected in the form of seed-samples in the Ivory Coast and in Cameroun. The plants of 2 species originate from botanical gardens. Living material of all species (except for Strychnos lernata Gilg. ex Lwb.) is grown in the botanical garden of Wageningen (WAG). The determination of the chromosome numbers was based on the study of roottipmitoses. Roottips of the plants were fixed in Karpechenko, embedded in paraffin, sectioned at 15 micron and stained according to Heidenhain’s haematoxylin method. The results may be summarized as follows: 1. Nuxia floribunda Benth.: 2n = 38 Origin of the material: S. Africa, obtained from the University of Stellenbosch. Seeds probably collected in the wild. Herbarium material of the mother-plant: J. J. Bos, no. 310 (WAG). Herbarium material of seedling: A. J. M. Leeuwenberg no. 3665 (WAG). References: Gadella (1963): 2n = 38. 2. Strychnos dinklagei Gilg.: 2n = 44 Origin of the material: Ivory Coast, Forêt d’Abouabou, between Abidjan and Grand Bassam. Herbarium material of the mother-plant: R. A. A. Oldeman no. 845 (WAG). Herbarium material of the seedling: A. J. M. Leeuwenberg no. 3561 (WAG). References: Gadella (1963); 2n = 44. 3. Strychnos innocua Del. subsp. innocua: 2n = 44 Origin of the material: Ivory Coast, 16 km S. of Ferkéssédougou. Herbarium material of the mother-plant: A. J. M. Leeuwenberg no. 4435 (ABI, WAG). 4. Strychnos millepunctata Leeuwenberg: 2n= 441) Origin of the material: Ivory Coast, Forêt d’Abouabou, between Abidjan and Grand Bassam. Herbarium material of the mother-plant: J. J. F. E. de Wilde & A. J. M. Leeuwenberg no. 3447 (ABI, WAG). 5. Strychnos samba Duvign.: 2n = 44 Origin of the material: Cameroun, 4 km S. of Nguélémendouka. Herbarium material of the mother-plant: F. J. Breteler no. 2051 (WAG). 6. Strychnos spinosa Lam.: 2n = 44 Origin of the material: obtained from the botanical garden of Groningen, the Netherlands, origin unknown. Herbarium material of cutting: A. J. M. Leeuwenberg no. 3564 (WAG). References: Mangenot and Mangenot (1958): 2n = 44. Miège (1960): 2n = 44. Gadella (1962): 2n = 44. 7. Strychnos ternata Gilg. ex Leeuwenberg: 2n = 44 1) Origin of the material: Cameroun, 27 km from Bertoua on road to Bétaré Oya. Herbarium material of the mother-plant: F. J. Breteler no. 2196 (WAG). Herbarium material of the seedling: F. J. Breteler no. 2994 (WAG). Twenty-one species of the genus Strychnos have been studied up to the present. The following chromosome numbers have been counted: 2n = 24 (3 species, counted by Mohrbutter, 1936); 2n = 44 (16 species); 2n = 88 (2 species). From these data the conclusion may be drawn that the more common basic number of the genus Strychnos is X = 11 or 1 = 22.
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  • 95
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    A reassessment of the Cyphellaceae (1966)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.231 (1966) nr.1 p.95
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    Publication Date: 2015-05-08
    Description: A suitable subtitle for this paper would have been “The rise and fall of a family”. What is usually called the Cyphellaceae is an instructive example of a situation not uncommonly encountered in the current systematics of mycology: a family retained in a traditional sense by some mycologists and considered by them as good a family as any, while others are convinced that it is nothing but a handy bin from which part of the contents has already been taken out and disposed of by scattering it over various groups, but which is still needed for keeping what remains. We do not yet know what to do with this considerable remainder, mainly because the published accounts are inadequate and the species have not yet been scrutinized anew in the light of present-day taxonomic requirements. In order to understand the basic idea of the Cyphellaceae the type species may be briefly introduced. The fact that Cyphella digitalis was originally described as Peziza digitalis is telling, and one could not do better than characterize it as a ‘discomycete’ with basidia, viz. a cup-shaped fruit-body with the hymenium lining the smooth inside or ‘disk’. If one were pressed to form an opinion about its taxonomic position from a dried, not annotated collection and without the aid of the microscope, one would even now, very likely, dispose of it as a discomycete. However, there is little doubt that in nature the cup is directed downward at least when mature, in contradistinction to the average discomycete in which the hymenium containing the asci is directed upward. This difference is a reflection of the two modes of violent spore discharge inherent in the hymenomycetous basidium and ascus; it has been explained through Buller’s well-known researches. The cups in the various species are not always typically cup-shaped; in a number they are more or less tubular or else more flattened and even disk-like.
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  • 96
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    La nomenclature au service de la Botanique Systématique (1966)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.223 (1966) nr.1 p.36
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    Publication Date: 2015-05-08
    Description: La systématique scientifique, qui classe tous les êtres vivants, actuels et fossiles, d’après leurs affinités naturelles ou présumées telles, doit pouvoir donner à chaque taxon un nom stable, permettant de le désigner avec son rang taxonomique et de l’identifier facilement. La nomenclature botanique n’échappe pas à cette exigence et depuis que C. Linné généralisa, en 1753, la nomenclature binominale, le besoin s’est fait sentir de compléter et de préciser, sur le plan international, les principes et les règles établis par l’illustre botaniste suédois.
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  • 97
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    Two questions about mass selection in Connecticut Shade Tobacco (1967)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.242 (1967) nr.1 p.512
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    Publication Date: 2015-05-08
    Description: From the general discussion of the effect of mass selection on the genotypic array of the next generation we have seen that under certain conditions mass selection can lead to homozygosity, but does not do so necessarily. Outcrossing, mutations and disadvantages of certain genotypes may prevent reaching equilibrium condition with complete homozygosity even in the simplest case of one locus with two alleles. It depends on the magnitude of these factors and the degree of heterozygosity of the variety how close to genetic uniformity we ultimately can come. The advancing of one generation has only a small effect, which becomes less as the frequency of one of the genotypes becomes less. Mass selection can reduce segregation in a variety, but only in ideal situations and only in small steps. Obviously the most effective way to promote genetic uniformity is to begin with non-segregating material obtained through careful inbreeding and within-family selection. Then, if this is available, mass selection is hardly necessary and seed collection should be done so as to prevent a return to a heterozygous condition. When only segregating populations are available, some changes can be expected if the selection intensity is low, but they will not be great and may not be noticed until after several generations. Returning to the original question of the stability of the tobacco variety, the conclusion can be drawn that when large numbers of plants from a field are selected as seedplants the changes in the next generation as a whole will be small, regardless of the selection procedure used. When 10-30 % of all plants are allowed to produce seed we cannot expect important changes. Also, when the environmental variations are as great as in shade tobacco, the possibilities of selecting against certain genotypes for a number of characteristics simultaneously becomes virtually impossible. Concerning whether or not mass selection can lead to improvements in the variety, it was explained that the selection intensity and the heritability of a character determine the selection response. Perhaps this response can be predicted in the case of one character, but it becomes difficult, if not impossible, to forecast the results when many characters are involved at the same time. Reference was also made to a selection index which has been effective in livestock breeding. Even if an index could be determined for shade tobacco, its use is not necessarily effective, as Kempthorne (1957) pointed out. The genotype-environment interaction makes questionable the choice of certain fields over others. Without experiments, such questions cannot be answered. It is likely that mass selection with low selection pressure changes a variety very little. Again, in a field where up to 30 % of the plants are selected for seed, the pressure cannot be very great and we should not expect great changes. Only when a few plants are carefully selected for certain characters should progress become noticeable, as is the experience of single plant selection in plant breeding. We conclude that mass selection for seed and plant breeding to improve a variety should not be confused with each other. Each has its own aims and methods, which are not interchangeable. Where uncertainty exists about seed, progeny tests usually are made to compare a seed with the parent seed. Bolsunov (1959) has described a number of such procedures for tobacco, though the more elaborate of them appear impractical.
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  • 98
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    Notes on Guiana Myrtaceae III (1950)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.100 (1950) nr.1 p.1
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    Publication Date: 2015-05-08
    Description: What KIAERSK wrote in 1893 in the preface of his “Enumeratio Myrtacearum Brasiliensium” is still largely valid. It is often most difficult to define a species belonging to this family, not only because, in the absence of ripe seeds, the genus is not easily ascertainable, but also because of the strong variability shown by the vegetative characters. Thanks to the examination of the rich Guiana material preserved in the herbaria of Genève, Kew, Leiden, New York, Paris and Utrecht, I have usually been able to delimit the species in a satisfactory way; their allocation to a definite genus, however, is often a difficult problem. During the preliminary stage of this investigation, which was interrupted by the war, it was of great advantage to me that I could study the Guiana specimens of the Leiden herbarium. In order to avoid misinterpretations, I have tried to base my conclusions as far as possible on an examination of either the types themselves or of duplicates of the latter. Several of these types, especially those that form part of the earlier collections of Guiana plants, e.g. of the collection Aublet, and of the collections Desfontaines (herb. Florence) and De Candolle (Genève) had never before been reexamined, and BERG, the last monographer of the South American Myrtaceae (in Linnaea XXVII (1855—56), XXIX (1858) and XXX (1861) has either neglected these species or given an, often incorrect, interpretation based on the description alone. For this reason the second part of this paper will be devoted to a short survey of these earlier types. My best thanks are due to the directors of all herbaria mentioned. Moreover, I have to thank the “Van Eedenfonds”, whose financial aid enabled me to pay a visit to Kew and to the British Museum.
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  • 99
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    J. Lanjouw en het Utrechtse Botanisch Museum 1926-1966 (1966)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.220 (1966) nr.1 p.5
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    Publication Date: 2015-05-08
    Description: Eén van de grote giften van A. A. Pulle, Lanjouw’s voorganger als Hoogleraar in de Bijzondere Plantkunde en de Plantengeographie te Utrecht, was zijn goede keus van medewerkers. Hij kon die keus maken dank zij een andere gift, die van leermeester. Pulle’s stimulerende activiteit als hoogleraar luidde de wedergeboorte in van de Nederlandse plantensystematiek door een stroom van leerlingen waarvan er velen ook nu nog een belangrijke rol spelen in de botanische wereld. Vele van Pulle’s leerlingen uit de eerste tijd moesten Utrecht verlaten omdat er in de twintiger jaren nu eenmaal nog geen sprake was van een redelijk gesalariëerde wetenschappelijke staf. Eén leerling echter werd zo gefascineerd door de vele mogelijkheden die het Utrechtse instituut bood, dat hij bleef, niettegenstaande de soms zeer ongunstige economische en organisatorische omstandigheden. Deze leerling, Lanjouw, toonde reeds toen de taaie volhardendheid die zijn medewerkers en leerlingen in later jaren zo goed leerden kennen en waarderen. Reeds van de eerste jaren van zijn assistentschap aan stonden Lanjouw de idealen voor ogen die hij in de loop van zijn lange loopbaan van assistent tot directeur voor het grootste gedeelte zou weten te realiseren. Deze loopbaan begon toen hij op 1 januari 1926 benoemd werd tot assistent bij de Bijzondere Plantkunde. In het jaar waarin we het feit herdenken dat het veertig jaar geleden is dat Lanjouw verbonden werd aan het Botanisch Museum valt ook de honderdenvijftigste verjaardag van het herbarium. Plantensystematiek is te Utrecht in meerdere of mindere mate beoefend van de stichting van de Universiteit af. Op 30 oktober 1816 echter werd het eerste herbarium voor de Universiteit verworven. In 1966 herdenken we dus eigenlijk twee jubilea. De periode van werkelijk actief systematisch onderzoek is echter veel korter geweest: de korte jaren van Miquel’s werkzaamheid (1859-1871) en de periode die in 1906 begon met de aanstelling van Pulle tot Lector in de plantensystematiek. Pulle gaf, voor het eerst na Miquel, en mede dank zij de stimulerende invloed van Went, een nieuwe stoot aan het plantensystematisch onderzoek in Nederland en wel vooral aan het onderzoek van de tropische flora’s. Een reeks van leerlingen wijdde zich onder zijn leiding aan de studie van de flora’s van Suriname en Nederlands Indië. Het is voldoende hierbij de namen van van Sloten, Lam, van Steenis, en Uittien te noemen om deze ontwikkeling te illustreren. Lanjouw koos voor zijn proefschrift de Surinaamse Euphorbiaceae en het was uit dit werk dat de „Flora of Suriname” voortkwam. Zonder ook maar iets tekort te doen aan de rol van Pulle kan gezegd worden dat van het begin van zijn loopbaan af Lanjouw actief heeft medegewerkt aan de opbouw van het Botanisch Museum en dat hij bij de ontwikkeling van de zo belangrijke „Flora of Suriname” een doorslaggevende rol heeft gespeeld. Zijn dissertatie „The Euphorbiaceae of Suriname” vormde, ten dele, tegelijk de eerste aflevering van de Flora.
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  • 100
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    Bistella Adans. versus Vahlia Thunb. (Vahliaceae) (1966)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht (2352-5754) vol.229 (1966) nr.1 p.84
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    Publication Date: 2015-05-08
    Description: The somewhat peculiar genus Vahlia Thunb. (1782) was formerly regarded as an anomalous member of the Saxifragaceae, but in 1959 it was segregated as the monotypic family Vahliaceae by Dandy (in Hutchinson, Fam. Fl. Pl. ed. 2, 1: 461). The genus includes about three species, all of them highly variable in stature, flower size, and indumentum; this has resulted in the description of more than twenty “species”, whose names now appear in synonymy. This note, however, is chiefly concerned with the generic name, since it appears that Vahlia Thunb. is not correct under the Code and must be replaced by Bistella Adans. (1763). In the synonymy under the new combinations, all the relevant names so far traced are included, but it may well be that an experimental approach to the problem of specific and infraspecific limits and the taxonomic value of the characters hitherto relied upon for differentiation would result in considerable changes. Bistella Adans. (1763) was cited in the form “ Bistella Lippi 243 – Ascyroides Lippi” and the name than fell into abeyance until it was resuscitated by Delile in 1826. He described plants collected by Cailliaud, and identified a number of them with those of Lippi. In particular, he identified Lippi 243 (and 244) with the Cailliaud plant which he named “ Bistella geminiflora Delil. (Descript, des plantes découv. par M. Cailliaud, pl. II. fig. 4). – Ascyroides Lippi (Manusc. nos. 243 et 244).” It must be emphasized that the taxonomic identification of “ Bistella Del.” with Vahlia Thunb. has never been questioned, but the identity of Adanson’s Bistella with Bistella geminiflora Del. has been overlooked; this species, as represented by Lippi’s plant, is the type of the generic name Bistella Adans.
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
    Format: application/pdf
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