Psilocybe rhomboidospora

A small brown mushroom first described by Atkinson and combined in Psilocybe by A. H. Smith, named for its rhomboid spores. It is recorded from eastern North America (Great Smoky Mountains, Michigan, Ontario, Quebec) and occasionally Europe. Its cultivation is undocumented, so the settings below come from the measured sites and the genus.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Very humid airBand in Plantistry

Light ShadeDLI and PPFD in Plantistry

Expects a seasonal rest

Where it grows wild

Mixed and deciduous forest; one Quebec record notes birch, maple, poplar, alder and fir. Likely on litter or woody debris.

Records range from near sea level in Quebec to the Great Smoky Mountains (roughly 600–1500 m).

United StatesCanada

🔒 Growing it like that

The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:

✓ Day and night temperature targets, and the limits it tolerates

✓ Humidity band, and how to hold it

✓ Light as DLI and PPFD for a grow light

✓ Wet and dry seasons, and whether to rest it

✓ Substrate and airflow

✓ A step-by-step setup to grow it like the wild

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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app.