Psilocybe subaeruginosa, "Golden Tops", or "Blue-staining Psilocybe" are wood-rotting fungi found in Australia and NZ. Often associated with dung or manure, they can be found in forests or in garden mulch. They contain the hallucinogenic substance psilocybin, which is a prohibited substance, and their possession is in breach of the law. Regardless of that, ingestion should be avoided, because these fungi can be confused with poisonous genera such as Galerina and Conocybe. Caps to 70 mm, convex with an umbo, smooth and greasy to waxy to the touch, yellow-brown to orange-brown, with blue-green patches; stains blue on bruising or ageing; remnants of cobweb veil may be present when young; hygrophanous, fading to biscuit-brown. Gills close, pallid grey brown, ageing to dark purple brown; pale edges; spore print dark purplish brown. Stem often curved, slender, tough, fibrillose, markedly stains blue-green when bruised - very distinctive; remnants of cobweb veil present as fibrillose zone; white mycelium at stem base. Jack Cann Reserve, Blackwood, 2008.