 In its taxonomic history , the species has also been placed in Geophila by Lucien Quélet in 1886 , and Psilocybe by Petter Karsten in 1879 . Psilocybe specialist Gastón Guzmán excluded the taxon from the latter genus in his 1983 monograph , based on its roughened spores that lacked a germ pore , pale spore print , stem texture , and the tawny basal mycelium . Guzmán , who examined Smith 's US collections , suggested that the material might be more appropriately considered a Galerina , but Redhead and Smith noted that several features of Mythicomyces corneipes are inconsistent with placement in Galerina , including spore print color , presence of metuloids , stem texture , and tawny basal mycelium . 
