Summary:
Features include 1) an acutely umbonate, hygrophanous, viscid, peelable cap that is pale reddish brown to ochraceous, 2) flesh that bruises blue, 3) whitish clay gills that become dark purplish brown with whitish edges, 4) a whitish stem that is soon reddish brown to honey-colored and sometimes has grayish-bluish-greenish tones, 5) a stem surface with whitish fibrillose patches up to the ring, 6) a farinaceous odor and taste, 7) growth on horse manure, in grassy areas, or in rich soils, 8) a dark purplish brown spore deposit, and 9) microscopic characters.

Cap:
(0.5)1-2.5(3.6)cm across, conic to convex, eventually somewhat bell-shaped, "expanding to broadly convex, and typically acutely umbonate with a sharp papilla"; hygrophanous, pale reddish brown to honey to ochraceous, fading in drying to yellowish olive to ochraceous or yellowish buff; "smooth to translucent-striate near the margin, viscid when moist from a thick, separable gelatinous pellicle", (Stamets), (0.5)1-2.5(3.6)cm across, conic to convex or somewhat bell-shaped to umbonate, slightly papillate or acutely umbonate, then expanded; hygrophanous, "pale reddish brown to honey color, sepia or ochraceous, sometimes clay olive honey, or yellowish olive", drying to ochraceous buff or yellowish from center outwards; "viscid, with a rather tough separable pellicle", bald, but at first with conspicuous, appressed, silky white fibrils from veil, slightly striate at margin mainly when moist, (Guzman)

Flesh:
whitish to honey-colored, bruising bluish where injured, (Stamets), whitish to ochraceous in cap, olive-honey over gills, white or whitish in stem, soon dark "Vandyke brown" in lower stem, this color spreading upward when old, (Guzman)

Gills:
"adnate, sometimes sinuate or uncinate"; whitish clay at first, eventually dark purplish brown when mature, with whitish edges, (Stamets), adnate, sometimes with slight tooth at stem; "whitish clay or pale clay-buff to olivaceous buff, finally dark purplish brown", edges colored as faces or usually whitish, (Guzman)

Stem:
(2)4-6.5(9)cm x (0.05)0.1-0.3(0.4)cm, equal to slightly swollen at the base, whitish at first, soon reddish brown or honey-colored, "and sometimes with grayish bluish green tones", surface covered with whitish fibrillose patches up to ring, (Stamets), (2)4-6.5(9)cm x (0.05)0.1-0.3(0.4)cm, equal or slightly bulbous, stuffed with white pith then hollow; "white, then brownish red, pale sepia or sepia-honey especially in the lower part, sometimes with gray blue-greenish tinges at base"; covered at first with silky-fibrillose white coating from veil, (Guzman)

Veil:
partial veil thickly cortinate, developing into fairly persistent, superior, densely fibrillose to membranous ring, (Stamets), well developed as white cortina that forms a more or less membranous and permanent ring, but sometimes remaining only as floccose fibrils on stem, white or concolorous with gills from spores, (Guzman)

Odor:
farinaceous, especially in young stages or when cut, (Guzman)

Taste:
farinaceous, especially in young stages or when cut, (Guzman)

Microscopic spores:
spores (9.5)11-14(16) x 6.5-8.5(9.5) microns; basidia 4-spored, pleurocystidia absent, cheilocystidia 20-32 x 4-8 microns, ventricose-fusiform or lageniform [flask-shaped] with a narrow neck, often flexuous [wavy], 4-15 x 0.5-1.5 microns, occasionally branched, (Stamets), spores (9.5)11-14(16) x 6.5-8.5(9.5) microns, subelliptic [somewhat elliptic] or elliptic in both face and side view, thick-walled (1-1.5 microns), yellowish brown, broad germ pore; basidia 4-spored, rarely 2-spored, 28-34 x 8-11 microns, colorless, subpyriform-ventricose, with sterigmata 2-3 microns wide at base; pleurocystidia absent; cheilocystidia abundant, forming a sterile band, 20-32 x 4-8 microns, colorless, thin-walled, ventricose-fusiform or lageniform, or almost Urtica-hair shape, with narrow or pedicellate base, neck flexuous [wavy] and long, 4-15 x 0.5-1.5 microns, sometimes irregularly branched; clamp connections present, (Guzman), [presumably spores smooth]

Spore deposit:
dark purplish-brown (Stamets), dark violaceous brown (Guzman)

Notes:
Psilocybe fimetaria has been found in BC, WA, OR, ID, NB, Chile, Czech Republic, Finland, Norway, and United Kingdom, (Stamets), and Denmark (Guzman).

EDIBILITY

moderately active (Stamets)

Synonyms and Alternate Names:
Psilocybe caesioannulata Singer
Stropharia fimetaria P.D. Orton