Fsilocybe AGARICACE^: 1 87 



853. P. chondroderma Sacc. (from the parchment-like pellicle of 



the pileus ; Gr. chondros, cartilage, derma, skin) a. 

 P. conico-campanulate, smooth, cracked, dark date-brown ; 



marg. jagged-appendiculate with V. St. fibrillose, pale sienna, 



darker below. G. ascending, adfixed, purplish-brown, edge 



white. 

 Woods, fir. Sept. ij X i\ X T 3 S in. Stains paper etc., yellow. 



854. P. serobieola Sacc. (from its habitat ; scrobis, sawdust) a. 



P. convex, umbilicato-depressed, whitish ; marg. undulate. 



St. attenuate downwards, fibrillose, colour as P. G. arcuato- 



adnate, brown, with a red tinge. 

 Pine sawdust, branches. Nov. if X i| X r 3 ff in. 



855. P. ammophila Gill, (from the habitat; Gr. amnios, sand, 



p kilos, loving) a b. 

 P. expanded, subumbonate, sienna-buff; marg. striate. St. base 



clavate, apex striate, white to pale buff, half buried in sand. 



G. adnate or with a decurrent tooth, pale purplish, becoming 



slate-pulverulent with spores. 

 Sea-shores, amongst sand. Aug.-Sept. if X 2 x J in. 



856. P. eoprophila Quel, (from the habitat ; Gr. kopros, dung, 

 philos, loving) a c. 



P. expanded, obtuse or subumbonate, downy, white, then 



rufescent. St. shaggy-flocculose, whitish. G. adnate, very 



broad, crowded, fuscous. 



Amongst grass, rabbits'-dung, on dung-heaps ; rare. Oct. -Jan. if X if x £in. 

 Sometimes infesting mushroom-beds. 



857. P. bullaeea Quel, (from a fancied resemblance in the pileus, 



when young, to a knob, bulla) a b c. 



P. expanded, subumbonate, dark tawny, tan when dry ; marg. 



appendiculate with V. St. subfibrillose, tawny or yellow, base 



fuscous-ferruginous, fibrilloso-annulate when young. G. adnate 



with a small sinus, very broad, crowded, fuscous-ferruginous. 



Gregarious. Dung, rich soil, amongst Polytrickum. April - Sept. 

 l| X I X 1 in. 



858. P. physaloides Quel, (from a fancied resemblance in the pileus 



to a bladder ; Gr. phusalis, a bladder, ados, appearance) a b c. 



P. flat, umbonate, fuscous-purple. St. adpressedly fibrillose, 



date-brown below, paler above. G. adnato-decurrent, crowded, 



ventricose, pallid ferruginous-fuscous. 



Rich grassy places, woods, on moss, horse-dung ; old walls ; uncommon. 

 Feb.-Sept. if X I J X jfj in. Must not be confounded with 771. 



859. P. atrorufa Quel, (from the blackish-red pileus ; atcr, black, 



ritfus, red) a. 

 P. expanded, obtuse, black-rufous or purple-fuscous ; mid. 

 darker ; marg. striate. St. at first subfibrillose, subpruinate 



