204 AGARICACE/E Coprinus 



925a. C. squamosus Morg. (from the scaly pileus and stem ; squama, 

 a scale) a. 

 P. submembranous, ovoid then expanded, cinereous, covered 

 with persistent reddish-brown sc, becoming split and 

 revolute. St. hollow, almost equal, smooth and white above, 

 scaly as P. below. A. median, small. G. free, ventricose, 

 white, then reddish-brown and purple-brown, becoming black. 

 Caespitose. Base of trunks, elm. Sept. 3J x \\ X f in. 



b. Atrame?itari(z. 



926. C. atramentarius Fr. (from the ink-like fluid into which the 



gills deliquesce ; atramentum, ink) a b c. 



P. campanulato-expanded, ribbed, sulcate, slate-white, then 



slate-purplish. St. fibrillose, white, pale umber at base. 



A. forming a fugacious ridge near base of St. G. grey-umber 



to umber-purple and black. 



Caespitose. Said to be edible, used for inferior ketchup, preferred by some 

 to 921. Rich soil by grassy roadsides, near stumps, usually near human 

 habitations, amongst rubbish, has appeared in abundance on burnt coffee, 

 rich soil, does not grow on dung ; common. June-Xov. 3 J x 6| x § in. 

 A group of this fungus lifted a large mass of asphalt paving in Hampton 

 Road in 1889 ; a similar occurrence took place at Dunstable in 1899. 



927. C. soboliferus Fr. (from its caespitose habitat ; soboks, an 



offshoot, fero, to bear) a b. 



P. irregularly conical, abruptly truncate, then expanded, ribbed, 



grey ; mid. pale sienna-brownish. St. furrowed, bluntly 



rooting, whitish. A. forming a fugacious ridge near base of 



St. G. dark brown-purplish or blackish. 



Caespitose. Base of rotten wooden palings, fences, stumps, elm. Spring 

 and Autumn. 2\ x 8 X § in. The mycelium produces two crops 

 annually. Intermediate forms between this and 926 occur. Sometimes 

 both forms grow in one group. 



928. C. fuseeseens Fr. (from the dusky colour of the pileus ; fuscus, 



dark, swarthy) a b. 



P. campanulate, then revolute, somewhat ribbed, tan ; mid. 



brownish; marg. purplish. St. whitish. A. forming a 



fugacious ridge near base of St. G. purple-umber to black. 



Caespitose. Stumps, rotten wood, wood in cellars, elm, in woods ; uncommon. 

 May-Dec. 2§ x \\ X \ in. Var. rimososquamosus Cooke. P. cracked 

 into angular squamose patches. 



c. Picacecs. 



929. C. pieaeeus Fr. (from the white patches on the black ground 



of the pileus ; pica, a magpie; a b c. 



P. campanulato-expanded, very smooth, then revolute. St. 



smooth, somewhat bulbous, biscuit, furfuraceous below. 



G. ventricose, grey, then black. 



Somewhat caespitose. Considered poisonous. Odour often fetid. Grassy 

 places, roadsides, borders of woods, beech, rarely on rotten wood ; rare. 

 Sept.-Dec. 4 x 11 X £ in. 



