Genus Coprimis. 
139 
** Pileus glabrous. 132-165. 
f Gills attached to the stem. 132-145. 
§ Stem downy or pulverulent. 132-134. 
§§ Stem glabrous. 135-145. 
ff Gills free. 146-157. 
§ Stem downy or pulverulent, 146-148. 
§§ Stem glabrous. 149-157. 
COPRINUS, Fries. 
Pileus symmetrical, flesh thin, usually radially striate or 
grooved, and bearing the remains of the universal veil ; stem 
central, most frequently hollow, in some species volvate and 
annulate ; gills adnate, adnexed, or free, thin, crowded, 
deliquescing at maturity, trama well developed ; basidia 
clavate or piriform, tetrasporous ; spores large, elliptical or 
irregularly angular, black, often with a tinge of purple or 
brown when seen in the mass ; cystidia numerous. 
Coprinus, Persoon, Syst. Meth. Fung., p. 395 (1801); used 
as a sectional name in the genus Agaricus. 
Fries, Epicr. Syst. Mycol., p. 241 (1836-1838). 
Section I. 
1 . Coprinus sterquilinus, Fries, Epicr. p. 242. 
Pileus conic-ovate, then campanulate, coarsely sulcate , silvery-grey, 
disc tawny and covered with squarrose squamules , 5-7 cm. high ; gills 
free, purplish-black ; spores 18-20x11-12 ju.; stem 9-15 cm. high, 
fibrillose, white, becoming dark coloured when bruised , volva adnate, 
margin free, sometimes carried up by the elongating stem as a ring. 
On dung and manured ground. Britain, France, Germany, Spain, 
Portugal, Sweden, Belgium. 
Distinguished among volvate species by the squamulose disc, and 
the white stem becoming blackish when bruised. 
2 . Coprinus solstitialis, Sacc., Syll. Suppl. 3, no. 498. 
Pileus cylindric-ovate, 2-5-3 cm - high and 1-5 cm. broad, even, 
whitish, covered with spreading, overlapping , somewhat concentrically 
