This is a very well known genus whose species are characterised by the fact that the gills deliquesce on maturity, and the resulting drops of black fluid are often extruded on to the caps. The species grow on a wide variety of substrata such as dung, soil, sand, peat, on various fabrics, dead wood, charcoal, and on logs of palmwood. The cap when young is usually conical or campanulate, then expanding, margin or often the entire pileus deeply plicate-furrowed; stipe central, more or less straight; veil often forming an annulus or a volva, or absent; gills parallel, sinuate or adnexed, or adnate, mostly disappearing with age due to auto-digestion starting from the edge upwards; context usually white or whitish, fleshy or very thin or fragile to almost absent in very small specimens; hymenophoral trama regular; hyphal clamp-connections often present; hymenium consisting of isolated basidia arranged regularly among pseudoparaphyses; cystidia characteristically large, very frequent on the sides of the gills; cheilocystidia usually not differentiated; spherocysts large, loosely attached on the edges of the gills; basidia normal, rarely clavate, usually cylindrical, one to four-spored; spore-print black or fuscous; spores blackish or opaque, or transparent, but always deeply coloured, smooth, more rarely warty, echinate, reticulate, or angular, with a germ pore.
KeywordsFruit Body Dead Wood Forest Litter Edible Mushroom Fall Leave
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