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  • Articles  (44,244)
  • 1950-1954  (44,244)
  • 1952  (44,244)
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  • 1950-1954  (44,244)
Year
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  • 1
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    Figures of "Submarine geology of two flat-topped northeast Pacific seamounts" (1952)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Details
    Publication Date: 2016-06-02
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 2
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    Deutsche Antarktische Expedition - Benennung geographischr Begriffe (1952)
    Bundesminister der Justiz
    In:  EPIC3Bremerhaven, Bundesminister der Justiz
    Details
    Publication Date: 2018-08-08
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 3
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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
    Type: Article / Letter to the editor
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  • 4
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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
    Details
    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.
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 5
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    Notes. Revegetation of Krakatau (1952)
    In:  Flora Malesiana Bulletin (0071-5778) vol.9 (1952) nr.1 p.292
    Details
    Publication Date: 2015-04-20
    Description: Some news was received on the revegetation of Krakatau, and the small new cone, Anak Krakatau (Krakatau Jr) as visited by a party in August 1951. Krakatau. The camp was made in the SE.corner of the island. In several places the old substratum has been traced, and in the basal layer of the ash covers, which attain sometimes 30 m thickness, remains are found of former woody share vegetation. Bases of tree trunks have partly been buried in their upright position. Some of these are charred, and have apparently been burned during the eruption; others are not charred, or have been charred only very superficially.
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 6
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    Protium Burman f (1952)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.7 (1952) nr.1 p.154
    Details
    Publication Date: 2015-03-06
    Description: A revision of the species, comprised in the section Eu-Protium of the genus Protium from the region from Asia to Australia incl., might., in view of the elaborate publications by H. J. Lam (The Burseraceae of the Malay Archipelago and Peninsula etc., Bull. Jard. bot. Buitenzorg, S. 3, 12, 1932, p. 318—324) and J. J. Swart (A Monograph of the genus Protium and some allied genera, Rec. Trav. bot. néerl., 39, 1942, p. 211—146), seem superfluous. However, an examination of the Clemens material from New-Guinea of 1939 and of the type material of the thusfar mysterious Bursera tonkinensis Guill. justified the publication of some notes thereon. To these some remarks concerning observations on other species have been added. I am much indebted to the directors of the following herbaria for the loan of material: the herbarium of the Botanisches Museum, Berlin; the herbarium of the Arnold Arboretum, Jamaica Plain, Mass. (A); the herbarium of the Royal Botanic Gardens, Kew; the herbarium of the Museum d’Histoire Naturelle, Paris; the herbarium of the Botanical Institute, Wroclaw (BRSL); the “Rijksherbarium”, Leiden (L).
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 7
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    Mimusops L (1952)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.6 (1952) nr.3 p.594
    Details
    Publication Date: 2015-03-06
    Description: Trees; leaves with caducous stipules; tertiary nervation descendant, but usually lax and irregular; inflorescences clustered, axillary, manyflorous; calyx with two rows of four lobes each; corolla 8-merous, each lobe with 2 dorsal segments as long as itself; stamens epipetalous, 8, in the same row as the 8 alternipetalous staminodes; ovary usually 8-celled; cells 1-ovuled, ovules anatropous, attached at the base; fruit a berry, 1—2-seeded; seeds with a small, circular, basal scar, in which the hilum and the micropyle are placed close to one another; albumen abundant; cotyledons thin, foliaceous; radicle long, cylindrical, exsert — About 80 species in all tropical countries, except in America. In 1925, Lam (Bull. Jard. Bot. Bzg, sér. 3, 7, 1925, 235—237) described of M. elengi three varieties, var. typica, var. parvifolia and var. brevifolia and a forma longepedunculata in the type-variety. As was pointed out already by him, the differences between the two new varieties are slight, if existing at all. As those between M. elengi and M. parvifolia were obscured by many intermediate stages Lam was forced to consider the latter a variety of the former. Studying the more abundant material at our disposal it becomes clear that M. elengi is an extremely variable species in which it is impossible to distinguish varieties or forms. However, it must be pointed out that in the western parts of the Archipelago the leaves are large (up to 18 cm long), whereas they are decreasing in size towards the east, ending in the small leaves of the former species M. parvifolia (up to 6 cm long).
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 8
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    The Convolvulaceae of Malaysia, VIII (1952)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.7 (1952) nr.1 p.179
    Details
    Publication Date: 2015-03-06
    Description: Dr Van Ooststroom’s revision of the genus Argyreia in this series (Blumea V, 2, 1943, p. 352) did not include the collections from the Philippines and the Malay Peninsula. The species from the Philippines have been treated later on by Van Ooststroom (Blumea VI, 2, 1950, p. 337), whereas further additions were given in Blumea V, 3, 1945, p. 686 and Blumea VII, 1, 1952, p. 170. The representatives from the Malay Peninsula remained uninvestigated so far. The present paper should be considered an addition to Van Ooststroom’s papers. Consequently I have not repeated the lists of literature, descriptions, or remarks, unless important additions or changes were necessary.
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 9
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    IV. Dacryodes in New Guinea (1952)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.7 (1952) nr.1 p.167
    Details
    Publication Date: 2015-03-06
    Description: Thusfar the genus Dacryodes, as far as the Australasian area is concerned, was only known to occur in Western Malaysia (including the Philippines), with a centre in the Malay Peninsula, Sumatra and Borneo. Only one, out of 13, species is extending towards Cochin China in the West and the Philippines and N. Celebes in the East and another is known from the Malay Peninsula, British N. Borneo and the Philippines (cf. the senior writer’s paper in Bull. Jard. Bot. Buitenzorg, sér. III, Vol. XII, 1932, 334—366). Thus, Dacryodes was so far considered one of the many exclusively or preponderantly west-malaysian genera which do not or hardly cross Wallace’s line.
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 10
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    Reconsideration of the so-called Oligocene fauna in the asphaltic deposits of Buton (Malay Archipelago) — 3. Report on Diatoms (1952)
    In:  Leidse Geologische Mededelingen (0075-8639) vol.17 (1952) nr.1 p.294
    Details
    Publication Date: 2014-10-27
    Description: Several samples of asphaltic marls from the Island of Buton have been analysed on diatoms. These samples after their treatment with solvents to eliminate the asphalt content appeared to consist of greyish or yellowish white marls. Despite the vigorous treatment with several solvents, by which the asphalt content was reduced to a small fraction of a percent, it proved to be impossible to prepare and wash the samples in the usual way. Only after heating them to about 800° F. for several hours, they could with much care be washed and cleaned adequately for final examination. The samples were labelled: Waisioe and Kaboengka.
    Repository Name: National Museum of Natural History, Netherlands
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