A new species, Gymnopus obscuroides Antonín & Legon (Agaricomycetes, Omphalotaceae), is described. It is characterised by having a very long, floccose stipe, an initially dark purplish-brown then more mahogany-brown pileus, pallid pinkish-beige lamellae, rather large, subfusoid, ellipsoid-fusoid, lacrimoid to pip-shaped basidiospores, cylindrical, clavate, (sub)fusoid, subutriform, regular, irregular to subcoralloid cheilocystidia, a pileipellis consisting of radially arranged, cylindrical, scatteredly diverticulate, cylindrical, narrowly clavate or narrowly lageniform caulocystidia, and distinctly incrusted ochraceous-brown (in H O) hyphae, these becoming brown-olivaceous in KOH. It belongs to 2 sect. Levipedes (Fr.) Halling, subsect. Alkalivirentes Antonín & Noordel.
Antonín V., Legon N. W. (2008): Gymnopus obscuroides (Agaricomycetes, Omphalotaceae), a new species of sect. Levipedes from England. – Czech Mycology 60(1): 13–19.
