Abstract
Abstract Gymnopilus is characterized by its ferruginous-yellow basidiomata and lamellae, ferruginous spore print, ellipsoidal basidiospores with warty and rough ornamentation, and lacking a germinative pore. Here, novel data on the Gymnopilus species of Paraguay is presented, macro and microscopic morphological characteristics, distribution, and ecology are described, and a taxonomic discussion is provided. Gymnopilus imperialis is recorded in the Alto Paraná Department, G. lepidotus in the Central Department, G. luteofolius in the Cordillera Department, G. peliolepis in the Paraguarí Department, and G. purpureosquamulosus in the Central Department and Boquerón, all as new records for Paraguay. Photographs of the fresh basidiomata and some microscopic structures such as basidia and basidiospores are attached.
Highlights
IntroductionIncludes more than 200 saprobic species, mainly lignicolous, which is why they represent an important component of the wood mycobiota around the world (Guzmán-Dávalos 2003; Holec 2005; Kirk et al 2008)
It has been observed that some tropical species are associated with Angiosperms and others with palms, while in temperate zones they are associated with conifers
Membranous partial veil, sulfurous yellow, later as an apical, evanescent membranous ring that leaves membranous remains to rust-brown fibrils in the stipe
Summary
Includes more than 200 saprobic species, mainly lignicolous, which is why they represent an important component of the wood mycobiota around the world (Guzmán-Dávalos 2003; Holec 2005; Kirk et al 2008). Gymnopilus is characterized by its yellow, ferruginous or purple basidiomata, yellow to ferruginous lamellae, central to eccentric stipe, with a partial cortinoid or fibrillose veil, generally fugacious, or as a membranous ring, bitter to farinaceous flesh, ferruginous spore print, basidiospores ellipsoidal with warty to rugose ornamentation, without germinative pore and in most species with dextrinoid walls, presence of subcapitulated cheilocystidia to capitated and hyphae with clamp connections (Horak 1989; Guzmán-Dávalos 2003; Holec 2005). It has been observed that some tropical species are associated with Angiosperms and others with palms, while in temperate zones they are associated with conifers
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