228 Psilocybe Coprinus. 



[vicina, Fr. P. convex then plane, obtuse, glabrous, umber then 

 pale ; g. slightly adnexed, grey then blackish ; s. stuffed, wavy, grey, 

 apex pruinose. 



catervata, Mass. Densely fasciculate. P. 1 2 cm. campan. 

 obtuse, white; g. slightly adnexed, crowded, edge entire, white; 

 s. 3 i cm. white ; sp. 12x4; cystidia fusiform. 



COPRINUS, Fr. 



Key to the Sections, 



I. Volva distinct with a free edge; ring present or absent. 

 p. 228. 



II. Volva absent ; ring present on stem. p. 229. 



III. Volva and ring absent. Veil practically absent. Pileus 

 either glabrous or with minute innate squamules, especially near 

 the apex, not splitting along the lines of the gills, p. 231. 



IV. Volva ami ring absent. Veil very evident at least in a 

 young state as a felty coating, which breaks up during expansion 

 of the pileus into patches, cottony, squamulose, fibrillose or mealy. 

 Not glistening nor micaceous, p. 231. 



V. Volva and ring absent. Pileus covered with glistening 

 micaceous particles when young, p. 236. 



VI. Volva, ring, and veil absent. Flesh very thin, pileus soon 

 splitting along the lines of the gills, scurfy or glabrous, p. 237. 



I. Volva distinct, with a free margin ; ring present 

 or absent. 



* Large ; pileus more than 2 cm. high and wide. 



f Stem white. 



sterquilinus, Fr. P. 5 7 cm. high, coarsely sulcate, silvery grey, 

 disc tawny with squarrose squamules; g. free; s. 9 15 cm. white, 

 dark when bruised ; volva with free margin, sometimes a ring on 

 stem; sp. 1820x1112. 



[solstitialis, Sacc. P. cylindric-ovate, whitish with concentric 

 over-lapping scales, expanding and blackish, grooved ; g. free ; s. 

 white, base volvate, ring imperfect. 



Smaller than G. sterquilinus, and stem not blackish when 

 bruised. 



oblectus, Bolton. P. 3 5 cm. coarsely striate, whitish, glabrous, 

 then pale tawny and sprinkled with rose-coloured powder ; g. free ; 

 s. 8 12 cm. white ; volva with recurved edge ; sp. 18 x 11 12. 



