Ascus, the club-shaped body which bears the spores inside (characteristic of the Ascomycetes).
Basidium (pl. basidia) the club-shaped body which bears the spores in the Basidiomycetes. These stand parallel, and together make up the entire or large part of the hymenium or fruiting surface which covers the gills, etc. Paraphyses (sterile cells) and sometimes cystidia (longer sterile cells) or spines are intermingled with the basidia.
Bulbous, said of the enlarged lower end of the stem in some mushrooms.
Circumscissile, splitting transversely across the middle, used to indicate one of the ways in which the volva ruptures.
Cortina, a cobwebby veil.
Cuticle, the skin-like layer on the outside of the pileus.
Decurrent, said of the gills when they extend downward on the stem.
Diffluent, said of the gills when they dissolve into a fluid.
Dimidiate, halved, said of a sessile pileus semi-circular in form and attached by the plane edge directly to the wood.
Echinulate, term applied to minute spinous processes, on the spores for example.