Panaeolus cyanescens Sacc.

Panaeolus cyanescens Sacc., Syll. Fung. 5: 1123 (1887). Notes. Description, see Gerhardt (1996). Panaeolus cyanescens is a well-known species recognized for its psilocybin-producing trait. It is a relatively easy-to-recognize species in the wild because its white-to-gray basidiomes turn blue when wounded or touched. In the phylogenetic analyses, this species is placed in subclade C 1, where it shows a sister relationship to the clade composed of P. axfordii, P. tropicalis, P. bisporus, and several unnamed samples. Specimens examined. China. Guizhou Province: Qiannan Buyi and Miao Autonomous Prefecture, Libo County, 4 August 1988, Jian-Zhe Ying, Chen-Liu Zong, and Ning Li, HMAS 57723.