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Which species can be found growing where and when?

A listing of Psilocycbin containing mushrooms species and their data.

Panaeolus cinctulus (aka P. subalteatus)

This mushroom is listed first because it is the most common and widely distributed psilocybin mushroom.  Found from spring to autumn alone or clustered in lawns, strawpiles, all types of compost, and dung piles in all 50 states and every country in the world.   They grow in large numbers on the manure compost piles that are nearby any stable, race track or place where horses are kept.

Psilocybe cubensis
Found from February to November growing directly from on cow or horse dung, in rich pasture soil, on straw, or on sawdust/dung mixture in Mexico, Cuba, Florida and most other other southern US states and tropical countries. 

Panaeolus cyanescens

Found in early summer through late autumn scattered, grouped, or clustered on cow dung, or rich soil in tropical areas such as Mexico and Hawaii as well as Florida and other southern states.  Fruits earlier in the season than P. cubensis.

Psilocybe cyanescens

Found in autumn scattered, grouped, or clustered  on wood chips, among leaves and twigs, and occasionally on decomposing logs -- in northwestern USA.  In California it fruits September through January and its range extends from the northern border south to San Diego.

Psilocybe ovoideocystidiata

Common in the Ohio River Valley from April 15 to June 15.  Has been found in Pennsylvania, SW Michigan, Ohio, West Virginia and New Jersey.

Psilocybe pelliculosa

Found September to December scattered, grouped, or clustered on humus and debris, in or near conifier forests in northwestern USA and as far south as Marin County, California. 

Psilocybe quebecencis

Found from summer to late October scattered in shady areas at forest edges, on sandy soil containing vegetable debris regularly inundated by river flooding, and on decomposing wood and debris (especially birch, alder, fir, and spruce) in the Quebec area. 

Psilocybe semilanceata

Found among grasses, in clearings, pastures, meadows, forest edges, open conifier woodlands, and on roadsides -- but never on dung -- in New York, northern USA, British Columbia, and Europe.  In the U.S., the season starts August through December (with the main season being in October and November).  In Europe the season is September through November, starting earlier farther north and at lower elevations.

Psilocybe strictipes

Found in October rather clustered on soil or on decomposing wood and debris, on conifiers and some other trees in northwestern USA (especially in Oregon).

Psilocybe subaeruginascens

Found from southern California to Washington and also Japan and Java.  It  resembles and shares similar wood chip habitats with Psilocybe cyanescens however it fruits in warmer weather and is often found after spring rains. 

Psilocybe subaeruginosa

Found in fall and winter from April to as late as October usually solitary or gregarious, sometimes in clusters. It occurs in a variety of habitats containing decomposing wood such as the floors of Pinus spp. forests, woodchipped landscape garden beds, rotting eucalypt mulch, amongst grass, native bushland and forests and even from moss. Only in occurs in Australia and New Zealand where it is common.

Psilocybe silvatica

Found in September and October in small compact but unclustered groups in woods on leaf mold, debris (especially beech wood), around stumps and logs, but not usually on them -- from New York to Michigan and as far north as Quebec and Ontario. This mushroom is small and is often mistaken for P. pelliculosa.

Psilocybe caerulipes

Very rarely found in summer and occasionally autumn solitary or clustered on decomposing logs and debris of hardwood trees (especially birch and maple) in New York, New England states, Ohio, Michigan, North Carolina, Tennessee and Ontario.

Psilocybe azurescens

Found in autumn scattered, grouped, or clustered in woods, on earth, among leaves and twigs, and occasionally on decomposing wood -- in northwestern USA.

Psilocybe baeocystis

Found in autumn and winter, solitary, grouped, or clustered on earth, lawns, mulch, and decomposing forest wood near scattered trees especially conifers -- in western Oregon and Washington.  It was once found in Maine.

Psilocybe mexicana

Common from May to August in Mexican meadows and fields where animals graze.  

Psilocybe caerulescens

Found in the summer during rainy season, grouped or clustered but rarely solitary, mostly in shady places on soil, sugar cane mulch, recently turned earth or stream banks -- in Mexico and once in Alabama and northern Florida. The Mexican variety P. caerulescens var. mazatecorum is known locally as "Durrumbe", which means "landslides." There it is often found in the middle of dry river beds, among landslides, and near corn or coffee plantations. 

Conocybe cyanopus

Rarely found in cool climates of North America and Europe in May through September usualy in dense shade scattered among mosses, and in wet soil around bogs, swamps, ditches, in lawns, fields, and grassy areas.  Difficult to safely identify as similar looking Conocybe species are deadly.

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