Name: Psathyrella candolleana
Author: (Fr.) Maire
Citation: Bull. Soc. mycol. Fr. 29: 185 (1913)
Basionym: Agaricus candolleanus Fr. 1818
Sanctioning author: Fr.
Cap: 3-11 cm; rounded-conical or convex when young, expanding to broadly convex, broadly bell-shaped, or nearly flat; bald; often developing shallow radial wrinkles; dry; honey yellow when young, changing color markedly to pale brownish or nearly white as it dries out; the young margin adorned with hanging partial veil remnants; mature margin often splitting radially in places.
Gills: Attached to the stem or nearly free from it; whitish at first, becoming grayish and finally dark brown; close or crowded.
Stem: 4-13 cm long; 3-8 mm thick; equal; fragile; white; hollowing; bald or slightly lined and/or silky; almost always lacking a ring, but sometimes with loosely clinging partial veil remnants in a ring-like zone.
Flesh: Very thin; fragile; brownish to whitish.
Odor and Taste: Not distinctive.
Chemical Reactions: KOH on cap surface pinkish (sometimes fleetingly) to lilac gray or brownish gray.
Spore Print: Dark purplish brown.
Microscopic Features: Spores 6.5-9.5 × 4-5 µ; ellipsoid with a truncated end; smooth; dark brown in KOH. Pleurocystidia absent. Cheilocystidia abundant; hyaline in KOH; thin-walled; subcylindric to subutriform, clavate, subclavate, or saccate; to about 50 × 15 µ. Pileipellis hymeniform-cellular.
Wächter, D., Melzer, A. (2020). Proposal for a subdivision of the family Psathyrellaceae based on a taxon-rich phylogenetic analysis with iterative multigene guide tree. Mycol Progress 19, 1151–1265.