The status of Psilocybe floridana (Strophariaceae) in Callistosporium (Tricholomataceae)

摘要

Evidence is presented indicating that the type specimen of Psilocybe floridana is the same type of Callistosporium psilocybe and that both names are synonyms of C luteoolivaceum. During the study of type specimens of Psilocybe (Fr.) P. Kumm. for a second edition of the monograph on the genus Psilocybe (Guzman 1983), we found that the type of P. floridana (Murrill 1945) does not belong to Psilocybe, as Guzman (1983) previously stated. Guzman had previously considered that Murrill's fungus was a Psathyrella sp. However, the intracellular pigment in the spores, basidia and hyphae, lack of clamp connections, and lack of a germ pore on the spores for P. floridana indicates this species is actually a Callistosporium Singer (1944). Notwithstanding, Singer(1944) had not considered Murrill's species when he, together with Murrill (Singer 1944), described C. psilocybe. Singer (1946, 1970) maintained this position in subsequent papers. Interestingly, the specimens used for the description of C. psilocybe arethe same ones that were used for the description of Psilocybe floridana. Singer (1946) considered C. psilocybe as a synonym of C. luteoolivaceum. In this paper we discuss the synonymy of Psilocybe floridana with Callistosporium luteoolivaceum.