348 BRITISH DISCOMYCETES. 
Peziza pulveracea—A. and &., p. 342, t. 8, f. 2; Pers, 
“ Myco. Eur.,” p. 827. Cenangiwm pulveracewm—Fries, 
“Sys. Myeco.,” 1. p. 181. 
On dead stems of holly. 
Name—Pulvis, dust ; powdery. 
Trefriw, North Wales ! 
C. SPORIDIA LINEAR-FUSIFORM OR FILIFORM. 
6. Cenangium fuliginosum. Fries. 
Gregarious or cespitose, crowded into broad patches, 
sessile or subsessile, erumpent, obovate, depressed at the 
summit and fibrillose-striate, coated with rusty powder, 
at length opening by a lacerated mouth, naked and 
fuliginous ; hymenium whitish cinereous, coriaceous-mem- 
branaceous ; asci cylindraceo-clavate ; sporidia 8, linear- 
fusiform, acute, straight or curved, 4 to 8-septate, 50— 
70 X 2—8u ; paraphyses filiform, sometimes branched. 
Pyenidia associated on the same stroma with the 
above, globose, smooth, blackish, at length opening by a 
pore at the summit; stylospores linear-fusiform, straight 
or curved, 3-septate, 20—30 x 2°5u. 
Cenangium fuliginoswm—Fries, “Elench.,” ii. p. 23 ; 
“Eng. Flo.,” v. p. 212; Tul., “Select. Fung. Carp.,” iii. 166, 
t. 20, f. 1-4; Berk., “Outl.,” p. 374; Cooke, “Handbk.,” No. 
2193. Scleroderris fuliginosa—Karst., “Myco. Fenn.,” 
p. 216. 
Exs.—Moug., 889 ; Sommf., 191; Rabh., “Herb. Myco.,” 
ed. ii. 710; “Fung. Eur.,” 938; Karst., “ Fung. Fenn.,” 
336. 
Name—Fuligo, soot ; from the smoky colour. 
On branches of willow. 
Rockingham Forest (Rev. M. J. Berkeley). 
7. Cenangium seriatum. Fries, 
Gregarious or cespitose, erumpent through narrow 
transverse cracks in the bark; cups globoso-depressed, 
at first closed, at length opening, horny, black, glabrous, 
arising, in company with the pycnidia and spermogonia, 
