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2. Misapplications of the type species name and the generic synonyms of section Plenodomus (Excluded species)
G.H. Boerema, W.M. Loerakker & Maria E.C. HamersVarious old records of Phoma lingam (teleomorph Leptosphaeria maculans) on non-cruciferous plants proved to be based on misidentifications. In the past the fungus has also often been confused with other fungi occurring on crucifers. Forty-five species formerly classified under the generic synonyms Plenodomus, Diploplenodomus, Leptophoma and Deuterophoma were excluded from Phoma sect. Plenodomus, seventeen of them being non-scleroplectenchymatous species of Phoma. Asteromella cocogena, Asteromella pomi and Phoma versabilis are described as new species and twelve new combinations are proposed: Ascochyta aggregata (Höhnel), Cytosporella cenangium (Corda), Fusicoccum hoveniae (Gucevicz), Phacidiella hiemalis (Desm.), Phoma cruenta (Sydow), Phoma filarszkyana (Moesz), Phoma haematites (Petrak), Phoma syriaca (Petrak), Phomopsis allescheriana (P. Henn.), Phomopsis destruens (Harter), Pleurophoma cava (Schulzer) and Pyrenochaeta corni (Batista & Vital).
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On three non-fructicolous species of the ëfructigenus-groupí with croziers
Jan HengstmengelDescriptions, illustrations, and keys are given of a small part of the ëfructigenus-groupí of the ascomycete genus Hymenoscyphus. The species concerned are characterized by asci originating from croziers. Hymenoscyphus scutuloides and H. fucatus var. badensis are described as new, while the combination H. fucatus is validly published.
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3. Lactarius melanogalus R. Heim and related species
Annemieke VerbekenThe type-specimens of the African blackening Lactarius-species, L. melanogalus R. Heim, L. baliophaeus Pegler and L. griseogalus R. Heim are examined and compared to recent collections from Zaire, Cameroon, Burundi, Zambia and Tanzania. Lactarius denigricans spec. nov. and L. baliophaeus var. orientalis var. nov. are proposed.
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Some taxonomic and nomenclatural changes in the Tricholomataceae, tribus Clitocybeae
Thomas W. KuyperThree new taxa and three new combinations are introduced in Tricholomataceae, tribus Clitocybeae. Taxonomic and nomenclatural comments on some other taxa are added.
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The problem of the correct interpretation of the original concept of Lentinus cyathiformis (Schaeff.) Bres. = Agaricus cyathiformis Schaeff. is analysed. The authors demonstrate, on the basis of the original protologue, that this species is identical with Pleurotus pulmonarius (Fr.) Quél. The modern interpretation of Lentinus cyathiformis, originating from Bresadola and followed by a number of contemporary authors, is erroneous: this fungus should be called Lentinus degener Kalchbr. in Fr.
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Two new species of Psilocybe
C. Bas & M.E. NoordeloosTwo new species of Psilocybe (Basidiomycetes, Agaricales) are described from the Netherlands, viz. P. puberula, a bluing species similar to P. semilanceata and P. cyanescens, but clearly different by its dry cutis-like pileipellis with well-differentiated pileocystidia, and P. flocculosa, a member of section Psilocybe characterized by a floccose stipe and the presence of pleurocystidia.
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Mycena calceata Robich, collected at LíEstartit in Spain in November 1993, during the Mycological Days of the European Confederation of Mediterranean Mycology, is described as new to science. It belongs to section Insignis, characterized by the radiating hairs at the base of the stipe, large spores and growing on thin rotting branches of Quercus suber (Cork oak) in mediterranean forest.
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A neotype is designated for Volvariella gloiocephala (DC.: Fr.) Boekhout & Enderle, to serve as an representative collection for the current concept of this species, that generally is considered conspecific with V. speciosa (Fr.: Fr.) Kummer.
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Melanoleuca polioleuca forma pusilla Boekhout & Kuyper, a new name for Melanoleuca polioleuca forma oreina (Fr.: Fr.) Boekhout
Teun Boekhout & Thomas W. KuyperA new name is introduced for the small-sized variant of Melanoleuca polioleuca, formerly also recognized as f. oreina. The authors demonstrate that the use of this epithet is undesirable because it is not likely that Agaricus oreinus Fr.: Fr. represents the same taxon.
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Latin diagnoses of two new species in Pseudobaeospora
C. BasTwo new species of Pseudobaeospora have been fully described and illustrated in the third volume of Flora agaricina neerlandica (Bas et al., 1995: 133-134), but without Latin diagnoses. In order to validate their names, diagnoses are provided here.
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Mycena juniperina, collected on bark of Juniperus in southern Norway, is proposed as a new species belonging to section Supinae. It is compared with the other species of the section, from which it is separated on account of the habitat, the pale brown colours of the pileus and the stipe, and some details in the microscopic features.
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Last modified April 2, 1998 by P. Hovenkamp.