146 Mas see. — A Revision of the 
by 8 mm. across ; gills black, edge white ; spores cylindrical, ends 
rounded, black, 12-17 x6/i; stem up to 12 cm. long , base 4 mm. 
thick, tapering upwards, furnished with a loose, deciduous ring, white, 
glabrous. 
Gregarious ; on worked wood. Hungary. 
Always expands at night, becoming diffluent as it does so. At first 
covered with a very thin, universal veil, which does not break up into 
squamules, but splits from apex to base, and becomes obliterated. 
Section III. 
26 . Coprinus fuscescens, Fries, Epicr. p. 244. 
Pileus thin, ovate then expanded, striate, margin not lobed, disc 
rufous, sometimes breaking up into scales, remainder greyish brown, 
powdered at first with opaque meal, 4-6 cm. high and broad; gills 
adnexed, narrowed towards the front ; spores 8-10x5-6 /u; stem 
8-12 cm. high, fragile, white, hollow, often curved, slightly fibrillose. 
On trunks and stumps. Britain, France, Germany, Finland, Holland, 
Sweden, Belgium, United States, Argentine Republic, Ceylon, Victoria. 
Allied to C. atramentarius , but smaller, pileus with more of a rufous 
tinge and not so irregular, and gills gradually narrowing from stem to 
margin. 
27 . Coprinus insignis, Peck, 26th Rep. p. 60. 
Pileus thin, campanulate, sulcately-striate up to the disc, greyish fawn- 
colour, disc glabrous, sometimes cracking into areolae, 5-8 cm. across ; 
gills ascending; spores asperate , 10x8 /x ; stem pure white, striate , 
hollow, 10-13 cm. long. 
Near roots of trees in woods. United States. 
Size and general aspect of C. atramentarius , but distinguished from 
this and all other allies by the rough spores. 
28 . Coprinus imbricatus, Rabenh., Hedw. 1871, p. 25. 
Conic-ovate, then campanulate, white, covered with large , imbricated, 
concentrically arranged, tawny-white scales, 3-5-5 cm. across; gills 
adnate and sub decurrent', spores elliptical, 18-21x13-14 /x ; stem 
white with a tawny tinge, hollow, striate, 5 cm. long. 
Among sand. Mesopotamia. 
