Psilocybe naematoliformis

The cap is 1–3 cm (0.4–1.2 in) in diameter, bell-shaped to subumbonate, smooth, and slightly slimy but soon dry. The color may range from a pale orange-brown to a deep rusty brown. It is hygrophanous, fading to buff; the color is blackish brown when dry, and slightly translucent-striate when wet. Like other hallucinogenic psilocybes, it stains blue when bruised or injured. The gills are adnate in attachment to the stem, or may be notched at the point of attachment (sinuate). They are narrow, and brownish violet to dark violet, with whitish edges. The stem is 3.5–5.5 cm (1.4–2.2 in) tall by 1–3 mm thick, subequal, flexuous, and hollow. The color of the stem is reddish-brown or brownish; it is densely covered with silk-like fibers, and tufts of soft woolly hairs. The veil does not form an annulus. The taste of this species has been described as slightly bitter, and the smell slightly farinaceous, like grain.

Microscopic features. The spores have dimensions of (3.8)4.9–5.5(6.6) by (3.3)4.4–5(6.6) by 3.8–4.4 μm, sublentiform (shaped somewhat like a biconvex lens) in face view or roughly elliptic in side view, with an inconspicuous hilar appendage. They have a distinct germ pore in the base, and are smooth and thick-walled. The basidia, the spore-bearing cells in the hymenium, are 12–19 by 4.4–5.5 μm, and hyaline. …

Psilocybe naematoliformis is found growing in small groups, in tufts or clumps, on disturbed places of the virgin tropical rain forest; it grows in soil with a few herbaceous plants. This species was originally found in Mexico, State of Veracruz, Uxpanapa region,.