On Two New TropicalVararia(Russulales, Basidiomycota) with Extremely Small, Racemose Dichohyphidia

Autor:	Bernard Duhem, Bart Buyck
Rok vydání:	2012
Předmět:	geography Indian ocean geography.geographical_feature_category biology Botany Archipelago Basidiomycota biology.organism_classification Ecology Evolution Behavior and Systematics Russulales
Zdroj:	Cryptogamie, Mycologie. 33:427-437
ISSN:	1776-100X 0181-1584
DOI:	10.7872/crym.v33.iss4.2012.427
Popis:	Vararia V. lanquetiniana and Vararia V. boidiniana (Basidiomycota, Russulales), two new species respectively collected in New-Caledonia (France, South Pacific) and Mayotte (France, Comoros archipelago, Indian Ocean), are described and illustrated in this paper. Both species form resupinate, pellicular and closely adnate, greyish to ochreargillaceous fruit bodies, and produce smooth, thin-walled, non-amyloid basidiospores, without a distinct amyloid suprahilar spot (in V. lanquetinae sometimes with a very subtle grayish patch). Both are in particular characterized by unusually small, racemose dichohyphidia, not dichotomically branching, but with very short, tortuous or finely botryophysoid terminal branches, very weakly dextrinoid, only partially so after AMA treatment. V. lanquetiniana is the second species of Vararia described from New-Caledonia, whereas Vararia V. boidiniana is the first representative of this genus on the Island of Mayotte.
Databáze:	OpenAIRE
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