346 BRITISH DISCOMYCETES. 



Edin," p. 425. Dermatea prunastri — Fries, "Sum. Veg. 

 Scan," p. 362 ; Fckl, " Symb. Myco," p. 267. 



Exs.— Berk, 162; Fckl, "F. Rh," 1126; Rehm, 

 " Asco," 213. 



On branches of sloe. 



Name — Prunus, the genus to which the plum belongs. 



Port Hill, Shrewsbury ! 



(b) Sporidia simple. 



2. Cenangium phceosporiini, 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 8 /u ; paraphyses thick, clavate, 

 brown above. 



Cenangium phceosporum — Cooke in " Grevillea," xii. 

 p. 44. 



On sycamore bark. 



About J a line broad. 



Name — tyaiog, dusky, airopoc, seed. 



Exeter ! (Mr. E. Parfitt). 



3. Cenangium ferruginosum. Fries. 



Gregarious or csespitose, 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 5/x ; paraphyses filiform, 

 simple. 



Pycnidia associated on the same stroma with the 

 above, small, conical ; stylospores narrowly ovate, 

 9—10 X 2— 3/x. 



Cenangium ferruginosum — Fries, in " Vet. Ak. 

 Handl," 1818, p. 361 ; " Sys. Myco," ii. p. 187 ; " Elench.," 



