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  • 1
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    The Dutch, French and British species of Psathyrella (1985)
    In:  Persoonia - Supplement (0920-895X) vol.2 (1985) nr.1 p.3
    Details
    Publication Date: 2015-04-20
    Description: The sole object of the present work is to furnish a monograph dealing exclusively with the species of the genus Psathyrella (exclusive of Lacrymaria, see Chapter VI) reported from the Netherlands, France and the British Isles. Ever since 1958 we intensively collected, described, depicted and stored in our herbarium these species from many parts of the Netherlands and later studied the exsiccata microscopically. From 1960 on we did the same practically every year for some three weeks in many parts of the British Isles, often during the annual forays of the British Mycological Society, and particularly in Wales and Scotland. Moreover through the valuable aid from Dr. D. A. Reid, Dr. D. N. Pegler and Dr. R. Watling and the information supplied by the ‘New Check List of British Agarics and Boleti’ (Dennis, Orton & Hora, 1960) we became very well acquainted with the British species of Psathyrella. Mr. H. Romagnesi’s vast knowledge of and experience with the French species of Psathyrella and the great co-operation between him and us resulted in our becoming extensively informed about the French species of the genus. Our frequent exchanges of information and exsiccata even led to Romagnesi’s discovery of a new species (P. phegophila Romagn.) in his own herbarium, which he very kindly publishes in the present work. The results of our observations on Psathyrella in the three countries of course were compared with those published by A. H. Smith in his monograph on the North American species, hitherto the only monograph of this genus.
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 2
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    Notes on the genus Psathyrella—VII. Psathyrella longicauda versus Psathyrella atrolaminata (= P. melanophylla pr. p. maj., excl. type) (1981)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi (0031-5850) vol.11 (1981) nr.3 p.359
    Details
    Publication Date: 2015-04-20
    Description: The name Psathyrella melanophylla proposed in our previous paper (1976: 370) to replace the misapplied name P. caudata, is in its turn replaced by the name atrolaminata as a result of the discovery that in our previous paper a collection belonging to P. longicauda had erroneously been selected as the type of P. melanophyllum, which renders the latter name a synonym of P. longicauda. It is argued that Ricken’s plate 68 fig. 1 (1913) does not represent P. atrolaminata as erroneously stated by Kühner & Romagnesi (1953: 359) and us (1976: 370) but P. longicauda. A redescription of both species is given.
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 3
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    Notes on the genus Psathyrella—VI. Four controversial species of Psathyrella: P. fibrillosa, P. frustulenta, P. clivensis, and P. obtusata (1977)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi (0031-5850) vol.9 (1977) nr.3 p.281
    Details
    Publication Date: 2015-04-20
    Description: Examination of four collections of Psathyrella frustulenta sensu A. H. Smith and four of P. frustulenta sensu Romagn. revealed that the former species is distinguished from the latter by its strongly developed veil and habitat (woods) and that there are considerable microscopic differences between the two (spore size, number and shape of pleurocystidia, pattern of cellular lining of gill edge). The former species is to be regarded as conspecific with Agaricus frustulentus Fries, the latter as conspecific with P. clivensis (Berk. & Br.) P. D. Orton. It is argued that the name P. fibrillosa was misapplied by J. E. Lange and A. H. Smith to a species for which the name P. friesii is introduced. Descriptions of P. friesii, P. frustulenta, P. clivensis, and P. obtusata are given.
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 4
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    Notes on the genus Psathyrella—III. Unorthodox approach and key to section Atomatae (1972)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi (0031-5850) vol.7 (1972) nr.1 p.23
    Details
    Publication Date: 2015-04-20
    Description: The species of the genus Psathyrella listed by Romagnesi (1953: 355) in the groups of Atomatae and Pronae are brought into one section, section Atomatae. This section is divided into a coprophilous and a non-coprophilous group. Fifty-four collections of species, belonging to this section were examined, including type material of Drosophila picta Romagn., D. orbitarum Romagn., and D. albidula Romagn.; herbarium material of Psathyrella atomata (Fr.) Quél, and Drosophila infida Quél., received from Prof. H. Romagnesi; type material of Psathyrella coprophila Watling, P. fimetaria Watling, and P. vinosofulva Orton. A new species, P. Romagnesii Kits van Wav. and a new variety, P. prona var. utriformis Kits van Wav. are described and it is argued that the latter name is to replace the name P. vinosofulva. It is argued that Agaricus atomatus Fr. is a nomen dubium, while D. albidula, and D. picta are to be regarded as mere forms of P. prona, that D. orbitarum is a mere colour variant of P. prona, and that D. infida is identical with P. prona. Psathyrella prona f. cana Kits van Wav. is proposed for what hitherto has always been known as P. atomata (sensu Bresadola and Lange). It is also argued that P. coprophila and P. fimetaria are conspecific. A key to the species of this section is given.
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 5
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    Additions to our monograph on Psathyrella. Thirteen new species, some revised keys, comments on other recently described species, and corrections and additions to our monograph (1987)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi (0031-5850) vol.13 (1987) nr.3 p.327
    Details
    Publication Date: 2015-04-20
    Description: Thirteen new species and a new variety of Psathyrella are described: P. badia, P. bernhardii, P. borgensis, P. capitatocystis, P. dennyensis, P. minutissima, P. mookensis, P. multicystidiata, P. perpusilla, P. ploddensis, P. romseyensis, P. twickelensis, P. vyrnwyensis, and P. obtusata var. aberrans. Some rectifications in the keys published in our monograph (Kits van Waveren, 1985) and some reconstructed keys necessitated by the insertion of new species are given. Recently described new species from outside the area covered by our monograph are briefly described and discussed. Corrections in and supplementary information to some of our descriptions in the monograph and a redescription of P. obtusata are presented.
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 6
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    Additions to our monograph on Psathyrella. Thirteen new species, some revised keys, comments on other recently described species, and corrections and additions to our monograph (1987)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi vol. 13 no. 3, pp. 327-368
    Details
    Publication Date: 2024-01-12
    Description: Thirteen new species and a new variety of Psathyrella are described: P. badia, P. bernhardii, P. borgensis, P. capitatocystis, P. dennyensis, P. minutissima, P. mookensis, P. multicystidiata, P. perpusilla, P. ploddensis, P. romseyensis, P. twickelensis, P. vyrnwyensis, and P. obtusata var. aberrans. Some rectifications in the keys published in our monograph (Kits van Waveren, 1985) and some reconstructed keys necessitated by the insertion of new species are given. Recently described new species from outside the area covered by our monograph are briefly described and discussed. Corrections in and supplementary information to some of our descriptions in the monograph and a redescription of P. obtusata are presented.
    Repository Name: National Museum of Natural History, Netherlands
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  • 7
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    Notes on the genus Psathyrella-IV. Description of and key to the European species of section Psathyrella (1976)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi vol. 8 no. 4, pp. 345-405
    Details
    Publication Date: 2024-01-12
    Description: The species of the genus Psathyrella, listed by K\xc3\xbchner & Romagnesi (1953: 357) in the groups Graciles and Microrrhizae, but excluding P. ammophila, are described and brought into one section, Psathyrella section Psathyrella emend. Kits van Wav. Four new species, belonging to this section are described, P. connata, P. melanophylloides, P. ridicula, and P. melanophylla [= Drosophila caudata sensu K\xc3\xbchn. & Romagn.]. Drosophila stellata var. orbicularis Romagn. is raised to specific level. Type material of D. ochracea Romagn., D. opaca Romagn., D. stellata Romagn., D. stellata var. orbicularis Romagn., and Psathyrella longicauda P. Karst. has been examined. It is argued that when it comes to a choice between spore size and shape of basidia on the one hand, and the degree of development of the veil on the other hand as leading characters in subdividing the genus Psathyrella into subgenera, spore size and shape of basidia are to be preferred because this directly leads to establishing the subgenus Psathyrella as a very natural group. The degree of development of the veil as key character leads to an undesirable spreading of closely related species over several subdivisions.
    Repository Name: National Museum of Natural History, Netherlands
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  • 8
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    Psathyrella subumbrina a new species of Psathyrella section Hydrophilae from Sweden (1986)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi vol. 13 no. 1, pp. 129-131
    Details
    Publication Date: 2024-01-12
    Description: On 22 October 1983 one of us (L.O.) found at Kjugekull in the parish of Kiaby, some 15 km from Kristianstad (Sweden), three carpophores (young and mature stages) of a characteristic species of Psathyrella, which, because of its overall brown colours and small spores (6.5\xe2\x80\x947 x 4.5\xe2\x80\x945 \xce\xbcm) belongs to section Hydrophilae (Kits van Waveren, 1985. 172). As we were unable to find a description of this taxon in the literature it was decided to describe it as a new species.
    Repository Name: National Museum of Natural History, Netherlands
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  • 9
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    Notes on the genus Psathyrella\xe2\x80\x94I. Psathyrella gracilis and P. microrrhiza (1971)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi vol. 6 no. 2, pp. 249-280
    Details
    Publication Date: 2024-01-12
    Description: Descriptions of Psathyrella gracilis and P. microrrhiza are given. In the former the following forms are recognized: f. gracilis, f. corrugis, f. clavigera, f. albolimbata, and f. substerilis. The variability of both species is stressed and a new character is described that may help to distinguish between the two. Forms, indicating that intermediates between the two species exist, are discussed.
    Repository Name: National Museum of Natural History, Netherlands
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  • 10
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    The genus Conocybe subgen. Pholiotina. I. The European annulate species (1970)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi vol. 6 no. 1, pp. 119-165
    Details
    Publication Date: 2024-01-12
    Description: Sixty-five collections, comprising all known European annulate species of Conocybe, subgenus Pholiotina, were examined, including the type specimens of C. vexans P. D. Orton and C. percincta P. D. Orton. In accordance with Orton, it is argued that Ricken, K\xc3\xbchner, and several other authors reversed the original conception of C. blattaria and C. togularis, as used by Fries, but that the specific epithet \xe2\x80\x98togularis\xe2\x80\x99 should be replaced by \xe2\x80\x98arrhenii\xe2\x80\x99. Conocybe aporos and C. arrhenii var. hadrocystis are described as a new species and a new variety respectively. It is argued that C. vexans is conspecific with C. blattaria, and C. percincta with C. teneroides. Singer\xe2\x80\x99s observation\xe2\x80\x94hitherto the only one of its kind\xe2\x80\x94that 2-spored basidia may occur in C. pilaris was confirmed and such basidia were also found in one collection of C. arrhenii. The taxonomic significance of several macroscopic and microscopic characters, often used for the distinction of the species are both scrutinized and criticized and often found to be very little or none. A key to the annulate species of the subgenus Pholiotina, chiefly based on the characters of spores and cheilocystidia, is given.
    Repository Name: National Museum of Natural History, Netherlands
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