346 BRITISH DISCOMYCETES. 
Edin.,” p. 425. Dermatea prunastri—Fries, “Sum. Veg. 
Scan.,” p. 362; Fekl., “Symb. Myco.,” p. 267. 
Exs—Berk., 162; Fekl, “F. Rh.” 1126; Rehm, 
“ Asco.,” 218. 
On branches of sloe. 
Name—Prunus, the genus to which the plum belongs. 
Port Hill, Shrewsbury ! 
(b) Sporidia simple. 
2. Cenangium pheosporum. Cooke. 
Scattered, erumpent, clove-brown, shortly stipitate ; 
externally rather delicately furfuraceous, attenuated 
downwards into the darker stem; margin a little in- 
curved ; hymenium nearly of the same colour ; asci elon- 
gated, clavate ; sporidia 8, uniseriate, smooth, clear brown, 
broadly elliptic, 12 x 84; paraphyses thick, clavate, 
brown above. 
Cenangiwm phaeosporum—Cooke in “ Grevillea,” xii. 
p. 44. 
On sycamore bark. 
About $ a line broad. 
Name—gaidc, dusky, odpoc, seed. 
Exeter! (Mr. E. Parfitt). 
3. Cenangium ferruginosum. Fries. 
. Gregarious or cespitose, subsessile, at first nearly 
globose, then subturbinate, coriaceo-membranaceous, 
rugose, coated with a reddish-brown powder, at first 
closed, then opening at the summit by an irregular 
aperture ; hymenium yellowish or olive-brown ; margin 
when dry inflexed; pale cinereous-white within; asci 
cylindraceo-clavate ; sporidia 8, elliptic or elliptic-fusi- 
form, obtuse, colourless, 12 x 54; paraphyses filiform, 
simple. 
Pyenidia associated on the same stroma with the 
above, small, conical; stylospores narrowly ovate, 
9-—10 x 2—3n. 
Cenangium ferruginosum — Fries, in “Vet. Ak. 
Handl.,” 1818, p. 361; “Sys. Myco.,” ii. p. 187 ; “ Elench.,” 
