Psathyrella candolleana (Fr.) Maire
Cap: Up to 5 centimeters wide, convex or bell-shaped, becoming somewhat knobbed, smooth, dry, golden-brown when damp to nearly white when dry, fragile, margin fringed with remnants of the inner-veil.
Gills: Attached, closely spaced, white, becoming light purplish-brown.
Stem: Up to 8 centimeters in length by 6 millimeters wide, white, smooth, fragile.
Spore print: Purple-brown.
Habitat: Grows on or near rotted wood or woody vegetative debris.
Season: Spring through fall.
Psathyrella conopilus (Fr.) A. Pearson & Dennis
Cap: Up to 4 centimeters wide, conical or bell-shaped, brown to grey to tan to whitish, hygrophanous, radially striate, brittle.
Gills: Attached, close, pale brown becoming blackish-brown.
Stem: Up to 12 centimeters long, thin, white to yellowish, brittle. Gills are attached, close, pale brown becoming blackish-brown.
Spore print: Blackish-brown.
Habitat: Found growing from soil and well rotted wood in grass or forests.
Season: Summer through fall.
Edibility: Unknown. Though this mushroom is likely to be edible as most Psathyrella probably are, mushrooms in this genus are not generally eaten whether for lack of taste/texture.
Psathyrella delineata (Peck) Smith
Cap: 3 to 10 centimeters across, convex becoming broadly convex, sometimes becoming flat, smooth at first becoming wrinkled to nearly reticulate, finely hairy, reddish-brown at first becoming orange-ish tan or paler, whitish veil remnants hanging around the margin in younger specimens.
Gills: Attached, close, light brown at first, turning dark brown.
Stem: Up to 10 centimeters tall, by 2 centimeters wide, smooth to silky, whitish with brownish tones towards the base, fibrous, becoming hollow with age.
Spore print: Dark purplish-brown.
Habitat: Grows on dead hardwood logs, stumps, and debris.
Season: June through October.
Edibility: Caps are edible.
Psathyrella piluliformis (Bull.) P.D. Orton
Cap: 2 to 5 centimeters wide, convex to nearly flat, tan to brown at first, discoloring reddish or yellowish at the center in older specimens.
Gills: Attached to the stem, close, light brown at first, turning grey to purplish-brown.
Stem: Up to 8 centimeters long by 6 millimeters wide, smooth, whitish.
Spore print: Purplish-brown.
Habitat: Fruits on rotten hardwood
Season: September through November.
Edibility: Caps are edible.
Psathyrella septentrionalis A.H. Sm.
Caps: Up to 5 centimeters wide; conic to convex, becoming nearly plane in maturity; smooth; moist; reddish brown; frosted with whitish fibrils when young, particularly near the margin; margin adorned with tooth-like remnants of partial veil in young, margin becoming striate in age.
Gills: Attached; close; pale brown at first, becoming dark brown.
Stems: Up to 6 centimeters tall by up to 5 millimeters thick; fairly equal; nearly smooth; whitish, white and powdery at the apex, pale brown at the base in older specimens.
Context: Thin; brownish.
Spore print: Brownish-black.
Habitat: In groups on hardwood logs and stumps.
Season: August through October.
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