Pileus (Cap): The cap is 1%u20136 cm in diameter, conical to convex, tan brown, hygrophanous, margin striate when moist, uplifting in age, and often with a slight umbo. It bruises bluish where damaged.
Lamellae (Gills): The gills are crowded, cream color when young, violet brown in age, with adnate to adnexed attachment.
Stipe (Stem:) The stipe is 4.5 to 12 cm long, 0.2 to 0.4 cm thick, white, finely striate, and equal to slightly enlarged near the base. A white cortinate partial veil soon disappears and often leaves traces in the upper stem.
Microscopic features: The spores are dark violet brown, subellipsoid, and 14 x 7 um.
Season: April to August.
Habitat and Distribution: wood such as wood chips in urban areas, Pine tree plantations and woody debris in forests and gardens. It is common in southern parts of Australia and New Zealand. Michael KuhneMO Occurrence Map
Growth Habit: Psilocybe subaeruginosa grows solitary to gregarious.
Bruising: Bruising blue when handled.
Other Notes: Psilocybin has been isolated from this species in 0.45% yield. In the same study, Psilocin was not detectable with the analytical methods used (chromatographic separation and UV spectroscopy), and was estimated to be present at less than 1% of the psilocybin content.