Psilocybe chionophila
A snow-loving (nivicolous) agaric, described by Lamoure and later placed in Psilocybe sensu lato by Noordeloos, that fruits at the edges of melting snowbanks in alpine and arctic country. GBIF has about 40 records, mostly from the French and Swiss Alps, with others from Norway, Greenland and North America. It needs a long cold winter and fruits in near-freezing conditions, so it is very hard to fruit indoors.
Where it grows wild
Fruits among mosses and alpine grassland near melting snow, as the name says; the substrate is plant debris and humus in open alpine or arctic ground.
Alpine to arctic; the usable GBIF record is from low-lying west Greenland, while most records are from high Alpine sites.
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The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:
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More Psilocybe
Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app.