155 
NEW BRITISH FUNGI. 
By M. C. Cooke. 
Agaricus (Collybia) psathyroides, Cooke. Ulus. t. 266. 
Ivory-white. Pileus campanulate, obtuse, rather viscid, margin 
regular, even ; stem erect, slender, hollow, equal, rather tough. 
Gills very broad, triangular, adnate with a decurrent tooth, rather 
distant, persistently white. Spores elliptic, colourless. *015 X 
•007 mm. On the ground. Epping Forest. 
Pileus J inch broad, nearly an inch high ; stem 3-4 inches 
long, slender. Allied to Ag. Stevensoni , B. & Br. Wholly white. 
Resembling in habit some Psathyra or Panceolus, but the spores are 
absolutely colourless when fully mature. 
Agaricus (Omphalia) caespitosus, Bolton, t. 41. 
Pileus submembranaceous, convex, subhemispherical, umbilicate, 
ochrey white, margin crenate, sulcate nearly to the top, smooth ; 
stem curved, fistulose, slightly bulbous at the base ; gills distant, 
rather broad, shortly decurrent, whitish. — Cooke Illustrations , t. 
209,/, B. On banks near King’s Lynn (C. B. P.). 
This species has been confounded with Ag. oniscus, Fr., both in 
the “ Handbook,” and by Fries himself. It is exactly the plant 
figured in the English edition of Bolton, but the German reprint 
is coloured quite differently. The colour is entirely of a delicate 
ochraceous white. 
Agaricus (Pleurotus) acerinus, Fr. Hym. Fur. 175. 
White, tough, pileus fleshy, thin, unequal, clad with silky fibrils ; 
stem rather lateral, thin, or obsolete villous. Gills decurrent, 
much crowded, thin, white, then becoming yellowish. 
On trunks. Epping Forest (W. G. Smith). 
Pileus 1-4 inches broad, not hygrophanous. By some oversight 
this species has not been recorded as British. An excellent figure 
by Mr. Worthington Smith is in the British Museum. 
Thecaphora Trailii, Cooke. 
Developed in the florets, purplish-brown, pulverulent. Spores 
globose, usually in fours, rarely 2 or 3, compressed on the inner 
face; epispore finely verruculose. *012-‘014 mm. diam. 
On Carduus heterophyllus. Scotland (Professor J. W. H. Trail). 
Having very much the habit and appearance of Ustilago Cardui , 
but differs in being a true Thecaphora , and in the epispore being 
verrucose and not reticulate. 
Ramularia Cochleari», Cke. 
Epiphylla, orbicularis, alba. Maculis pallidis. Sporis elongato- 
cylindricis, rotundatis, continuis, hyalinis. 025- - 028 x *0035 mm. 
On leaves of Cochlearia officinalis. Banks of Don (Prof. Trail). 
Cylindrosporium niveum, B. <& Br. 
The species described as Cercospora Calthce , in u Grevillea,” p. 
72, should be referred to the above. 
