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.
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
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.
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.
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.
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.
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.
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.
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).
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.
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.
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.
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.
in autumn scattered, grouped, or clustered in woods, on earth, among
leaves and twigs, and occasionally on decomposing wood -- 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
Common from May to August in Mexican meadows and fields where animals graze.
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.
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.