Fruiting directly from nitrogen rich horse manure-montane elevation. Bases bluing readily due to low temps and high nitrogen content.

P. acuminatus has a similar behavior with minute isidia to stems, brown cap and jet black gills- but without bluing reaction to stem base and twisted striate stipes.

El: 3800ft.

Temp: near freezing, snowing lightly.

Striate, minutely hirsute stems; Buff, somewhat zoned caps, very wet collection for this species, glabrous at maturity. Gills jet black, with lamellae grey to white towards tips.

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Add Comment
By: Byrain
2015-11-03 18:54:40 PST (-0800)

Spore shape, size, details about the germ pore (Oblique?), and cheilocystidia shape.

Check for sulphidia on the gill faces
By: Alan Rockefeller (Alan Rockefeller)
2015-11-03 18:18:47 PST (-0800)

which would indicate that this is Panaeolus fimicola.