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Registros recuperados: 60
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A correction Naturalis
Maas Geesteranus, R.A..
In Persoonia 2: 389. 1962, the new combination Hydnellum piperatum (Coker) Maas G. was proposed, but it escaped my attention that the basionym, Sarcodon piperatus, had not been provided with a Latin description, rendering the new combination invalid. The following diagnosis, taken from Coker’s description and augmented with a few notes of my own, should validate the name.
Tipo: Article / Letter to the editor
Ano: 1963 URL: http://www.repository.naturalis.nl/record/532341
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A Hydnum from Kashmir Naturalis
Maas Geesteranus, R.A..
Mycoleptodonoides Nikol. is compared with other genera, Hydnum aitchisonii Berk, is redescribed, and for it the new combination Mycoleptodonoides aitchisonii (Berk.) Maas G. is proposed.
Tipo: Article / Letter to the editor
Ano: 1961 URL: http://www.repository.naturalis.nl/record/532302
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A new clavicorona Naturalis
Maas Geesteranus, R.A..
Basidiomata circa 20 mm alta, caespitosa, basi vel media altitudine ramosa. Rami 1 mm lati, sursum tubae more dilatati usque ad 2 mm, recti vel curvati, infra cylindracei, supra depressi vel infundibuliformes, interdum uno latere profunde fissi, itaque marginibus involutis vel cochleares, labro revoluto, integro vel varie inciso, intus laevi, extus costato-venosi, glabri, subnitentes, avellanei vel badii, sursum nigrescentes. Stipes vix evolutus, mycelio basali ortus. Caro albida, odore saporeque ignotis. Hyphae 3.5-11.5 μm latae, subinflatae, parietibus tenuibus vel modice incrassatis instructae, anastomosantes, ramosae, septatae, fibulis munitae; hyphae materia oleosa replatae 2.5-6.5 μm latae. Basidia 27-32X5.4-6.3 μm (matura non visa), clavata,...
Tipo: Article / Letter to the editor
Ano: 1975 URL: http://www.repository.naturalis.nl/record/532245
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A new species and new section of Mycena from Costa Rica Naturalis
Maas Geesteranus, R.A.; Ovrebo, Clark L..
Mycena seclusa is newly described from the lowland rain forests of Costa Rica; it is the type species of the new section Seclusae.
Tipo: Article / Letter to the editor
Ano: 1997 URL: http://www.repository.naturalis.nl/record/531926
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Boekbesprekingen Naturalis
Maas Geesteranus, R.A..
Atlas van de Nederlandse bladmossen, door J. LANDWEHR, met medewerking van Dr. J. J. BARKMAN. Bibl. van de Kon. Ned. Natuurhistorische Ver., uitgave no. 15, Amsterdam, 1966, 504 p., 394 platen met ongeveer 4500 detailtekeningen, 38 figuren. Prijs ƒ 29.50 voor niet-leden en ƒ 24.50 voor leden van de K.N.N.V. Reeds lang bestaat bij de Nederlandse belangstellenden voor de mossenstudie de behoefte aan een boek met illustraties, dat naast de Mossentabel van Margadant kan worden gebruikt. Dank zij het lofwaardig initiatief en het doorzettingsvermogen van de heer Landwehr, en de medewerking van Dr. Barkman en de K.N.N.V. beschikken wij thans voor de bladmossen over zo’n plaatwerk. Zoals Barkman schrijft in zijn „ten geleide” is dit een uniek werk, dat de...
Tipo: Article / Letter to the editor
Ano: 1967 URL: http://www.repository.naturalis.nl/record/527948
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Clamp connections at the cheilocystidia in Mycena Naturalis
Maas Geesteranus, R.A..
Clamp connections at the cheilocystidia in Mycena are invariably correlated with their presence in other elements of hymenium and subhymenium. In some species of the genus clamped cheilocystidia occur in both the four- and two-spored forms; in others, the cheilocystidia are clampless in the two-spored form. Two of the sections examined are shown to comprise species with clamped and species with clampless cheilocystidia, suggesting that the presence of clamps at the cheilocystidia is a character of specific rather than sectional importance. Two examples are given to illustrate the value of clamps at cheilocystidia as a distinguishing character Mycena jacobi and M. niveipes, long regarded as being identical, are here considered to represent two separate...
Tipo: Article / Letter to the editor
Ano: 1978 URL: http://www.repository.naturalis.nl/record/532315
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Corrections Naturalis
Maas Geesteranus, R.A..
Some bad errors crept into my work ‘Die terrestrischen Stachelpilze Europas’ and I am indebted to Dr. V. Demoulin, Liège, for having rapped my knuckles. Sarcodon regalis Maas G. in Verh. K. Ned. Akad. Wet., Afd. Natuurk., Tweede reeks 65: 106. 1975. — The Latin description remains unaltered. Collection Maas Geesteranus 15291 (L) is here formally indicated as lectotype.
Tipo: Article / Letter to the editor
Ano: 1975 URL: http://www.repository.naturalis.nl/record/531976
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De lange weg Naturalis
Maas Geesteranus, R.A..
Peziza alpina (Fuck.) Cooke (1876) and Peziza alpina (Fuck.) Oud. (1885) are recombinations based on Humaria alpina Fuck. (1874), and have no relation with Peziza alpina Sauter (1878). While the identity of Fuckel’s species is left out of consideration (as it will be discussed in a future paper), the fungus described by Oudemans appears to represent Cheilymenia coprinaria (Cooke) Boudier.
Tipo: Article / Letter to the editor
Ano: 1968 URL: http://www.repository.naturalis.nl/record/527707
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De Nederlandse Tulostoma-soorten Naturalis
Maas Geesteranus, R.A..
The genus Tulostoma as occurring in the Netherlands is represented by T. brumale, T. melanocyclum, and T. fimbriatum. Practically all finds have been reported from the calciferous sands of the coastal area. A fourth species — T. squamosum — may be expected to occur in the extreme southeastern part of the country. A key to the species is given together with brief macroscopic descriptions which should help in the identification. Tulostoma melanocyclum, thus far unrecorded for the Netherlands, seems to be the commoner species.
Tipo: Article / Letter to the editor
Ano: 1971 URL: http://www.repository.naturalis.nl/record/527180
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Dr. M. A. Donk, his life and work Naturalis
Maas Geesteranus, R.A..
With the death of Dr. M. A. Donk on 2 September 1972 the mycological world has lost one of its great personalities. Born on 14 August 1908 at Situbondo, Java, of Dutch parents, Donk went to a secondary school at The Hague and entered the University of Utrecht in 1927. He received his doctor’s degree on 7 July 1933.
Tipo: Article / Letter to the editor
Ano: 1973 URL: http://www.repository.naturalis.nl/record/532393
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Further Mycenas from the State of Paraná, Brazil Naturalis
Maas Geesteranus, R.A.; Meijer, A.A.R. De.
Seven new species of Mycena from the State of Paraná, Brazil, are described in section Sacchariferae, one species each in sections Nigrescentes and Granuliferae, and complementary notes are given of one species in section Polyadelphia. A key is provided for the species of section Sacchariferae thus far found in Paraná.
Tipo: Article / Letter to the editor
Ano: 1998 URL: http://www.repository.naturalis.nl/record/531655
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Further new species of Mycena and a new section from Spain Naturalis
Villarreal, M.; Heykoop, M.; Esteve-Raventós, F.; Maas Geesteranus, R.A..
This short note directs the attention towards a new section and its type species, and two new species of section Fragilipedes (Fr.) Quél. Hydropus flocculinus is transferred to the genus Mycena.
Tipo: Article / Letter to the editor
Ano: 1998 URL: http://www.repository.naturalis.nl/record/532382
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Further new species of Mycena from Spain — II Naturalis
Villarreal, M.; Heykoop, M.; Maas Geesteranus, R.A..
In this paper, again, three new species of section Fragilipedes are described, Mycena olivaceoflava, M. rubidofusca and M. vicina. Mycena hepatica is a new species of section Rubromarginatae. The circumscription of section Insignes is slightly altered, as a result of which Mycena quinaultensis, M. conspersa, M. mitis and M. corrugans are transferred to section Fragilipedes.
Tipo: Article / Letter to the editor
Ano: 1999 URL: http://www.repository.naturalis.nl/record/531905
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Geoglossaceae of India and adjacent countries Naturalis
Maas Geesteranus, R.A..
A revision of the genera Geoglossum, Microglossum, and Trichoglossum as represented by collections made in West Pakistan, India, Nepal, Sikkim, and Tibet is given. Several species from this area are recorded for the first time. Geoglossum glabrum, albeit not indigenous, is discussed and shown to be a nomen dubium; the name as used in the sense of Nannfeldt is replaced by G. sphagnophilum. The name Geoglossum nigritum is a misapplication, so that for it G. umbratile is re-introduced. Geoglossum umbratile var. heterosporum is a new combination.
Tipo: Article / Letter to the editor
Ano: 1965 URL: http://www.repository.naturalis.nl/record/532470
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Hyphal structures in Hydnums Naturalis
Maas Geesteranus, R.A..
In this paper descriptions are given of the hyphal structure in the hydnaceous genera Climacodon P. Karst., Creolophus P. Karst., Donkia Pilát, Hydnellum P. Karst., Mycoleptodonoides Nikol., Mycorrhaphium Maas G. (which is introduced as a new genus), Phellodon P. Karst., Sarcodon P. Karst., and Steccherinum S. F. Gray. The following new combinations are proposed: Hydnellum piperatum (Coker) Maas G., Mycorrhaphium adustum (Schw.) Maas G., M. pusillum (Brot. ex Fr.) Maas G., and Steccherinum murashkinskyi (Burt) Maas G.
Tipo: Article / Letter to the editor
Ano: 1962 URL: http://www.repository.naturalis.nl/record/531794
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Itinerary in Kenya colony and the union of South America Naturalis
Maas Geesteranus, R.A..
In 1949 a trip was made to Kenya Colony, British East Africa, with the aim of collecting Phanerogamic plants and Ferns. The intention was to collect 12 sets of each number which I managed to do for about 70 %. Except for the first set which will be incorporated in the Rijksherbarium, the plants will be sold to those institutes in Europe, S. Africa and America which had subscribed in advance. It is expected, however, that a few more sets in excess of the 12 aforementioned will be available. It should be noted that these will prove rather incomplete, numbering less than 30 % of the total amount.
Tipo: Article / Letter to the editor
Ano: 1952 URL: http://www.repository.naturalis.nl/record/525605
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Melastiza flavorubens found in the Netherlands Naturalis
Maas Geesteranus, R.A..
[Geoscypha depressa var. flavorubens Rehm in P. Sydow, Mycoth. march., No. 884. 1885 (?), without descr., not validly publ.] — Humaria flavorubens Rehm in Rabenh., Kryptog Fl. II 1 (3): 960. 1894. — Melastiza flavorubens (Rehm) Pfister & Korf apud Korf in Phytologia 21: 204. 1971. Type distribution: P. Sydow, Mycoth. march., No. 884.
Tipo: Article / Letter to the editor
Ano: 1975 URL: http://www.repository.naturalis.nl/record/531666
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Mycena acrocephala. A new member of section Adonideae from Sikkim Naturalis
Maas Geesteranus, R.A.; Horak, E..
Mycena acrocephala is described as a new species, based on copious material collected in Sikkim. Its characters are compared with those of Agaricus flavominiatus Berk.
Tipo: Article / Letter to the editor
Ano: 1993 URL: http://www.repository.naturalis.nl/record/531833
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Mycena agrestis, a new species of section Fuliginellae from southern Norway Naturalis
Aronsen, A.; Maas Geesteranus, R.A..
Mycena agrestis is a new species of section Fuliginellae. It is compared with the section’s type species, M. vulgaris, and shown to differ from the other members known from North America. Thus far, section Fuliginellae has not been recorded with certainty from the Southern Hemisphere.
Tipo: Article / Letter to the editor
Ano: 1997 URL: http://www.repository.naturalis.nl/record/532439
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Mycena cupressina, a new species of section Supinae from Italy Naturalis
Antonín, V.; Maas Geesteranus, R.A..
Mycena cupressina, found on bark of Cupressus, is proposed as a new species belonging to section Supinae. It is compared to M. corticalis which equally grows on bark of a coniferous tree in North America.
Tipo: Article / Letter to the editor
Ano: 1998 URL: http://www.repository.naturalis.nl/record/532195
Registros recuperados: 60
Primeira ... 123 ... Última
 

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