Psilocybe crobula (Fr.) Singer (illustrated almost life size) Cap 0.5–1cm across, convex then flattened; pallid-brown, the margin faintly or not at all striate; with small, adpressed, whitish scales from the veil at first, persisting at margin; detachable viscid layer. Stem 5–12×1mm; concolorous with cap or darker; whitish; shaggy with fibrous scales. Flesh pallid. Gills pallid clay, becoming dull rust. Spores 6–7.5×3.5–4.5¼, elliptical to lens-shaped. Spore print cigar-brown. Habitat on twigs, grass stems and other herbaceous debris; autumn. Uncommon. Hallucinogenic.