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Borovicka J. 
“The wood-rotting bluing Psilocybe species in Central Europe - an identification key”. 
Czech Mycology. 2008;60(2):173-174.
An identification key to psychoactive bluing Psilocybe species growing on woody debris in Central Europe is presented. It is mainly based on microcharacters and includes 7 taxa 6 species and 1 variety of the stirpes Serbica and Cyanescens former “Psilocybe cyanescens complex“. Micro-, macroscopical, ecological and phenological characters and distribution of the taxa in Europe are presented and discussed.

During the 1980s, the European bluing Psilocybe species were studied by the German mycologist G. J. Krieglsteiner, who included P. serbica M. M. Moser et E. Horak, P. mairei Singer and P. bohemica Šebek ex Šebek as synonyms of P. cyanescensWakef. 1946 emend. Krieglst. Krieglsteiner 1984, 1986. This concept has been widely accepted in Europe e. g., Ludwig 2001, Bon and Roux 2003, Horak 2005, Knudsen and Vesterholt 2008. On the other hand, Guzmán 1995 recognises P. cyanescens, P. serbica and P. bohemica as good species, and Noordeloos 1999 pointed out that this group of taxa is in need of critical revision.

Bluing Psilocybe species are very rare in Western Europe but quite common in certain areas of the Czech Republic. Since 1999, I have studied many fresh collections containing thousands of fruitbodies and many herbarium specimens of these Psilocybe species. Three new taxa – P. arcana Borovi&269ka et Hlavá&269ek, P. moravica Borovi&269ka, and P. moravica var. sternberkiana Borovi&269ka were recently described from the Czech Republic Borovi&269ka and Hlavá&269ek 2001a Borovi&269ka 2003, 2006. The results of my studies of macroscopic and microscopic characters indicate that Krieglsteiner’s broad concept of P. cyanescens Wakef. cannot be accepted Borovi&269ka 2005.
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