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Agrocybe

Field characters

Pileus: usually convex, becoming more or less planar
Annulus: present or absent
Stipe: white or colored
Stature: Collyboid-Tricholomatoid
Ecology: often in gardens and lawns, saprophytic

Micro characters

Basidiospores: smooth, thick walled with a germ pore
Hyphae: with clamp connections
Cystidia: pleuro- and cheilocystidia usually present
Spore Print: burnt umber, cocoa, chocolate etc.(Singer 1986)
Lamellae: broad, attached
Lamellar Trama: regular?
Pileipellis: hymeniform

Notes

According to Arora, this is a difficult genus to characterize, and they resemble Pholiotas and Hebelomas superficially. However, as a member of Bolbitiaceae they have brown spores with a germ pore and the pileipelis is hymeniform.