CEXANGIUM. 115 



disc dark brown, often paler -witli age, externally blackish 

 somewhat -wrinkled and minutely scurfy or mealy, ^-1 cm. 

 across; hypothecium and excipulum composed of h^yaline, 

 densely interwoven hyphae, passing into parenchyma at the 

 cortex, which runs out into irregular groups of thick- walled, 

 brown, almost globose cells 6—8 fx. diameter and forming the 

 scurfy exterior ; asci cylindric-clavate, slenderly stipitate, 

 8-spored ; spores irregularly 2-seriate, hyaline, smooth, 

 continuous, cylindric-oblong, ends obtuse, straight or slightly 

 curved, 14 x 3-5-i yx; paraphjses numerous, septate, tip 

 slightly thickened and brownish. 



Peziza populnea, Pers., Teut. Disp. Math. Fung., p. 35 

 (1797). 



Peziza fascicularis. Alb. and Schw., Consp. Fung. Xist., 

 p. 315, t. 12, fig. 2 (1805). 



Encoelia fascicularis, Karst., Myc. Fenn., i. p. 217; Phil., 

 Brit. Disc, p. 336. 



On dead branches of poplar, ash, willow, &c. 



Distinguished from. C. furfuracea by the thinner hyphae 

 of the excipulum, smaller cells of the cortex forming the 

 external scurf, larger spores, and blackish exterior of the 

 ascnphore. 



Cups about -i lines broad. Caespitose, 6 to 12 united, but 

 sometimes solitary, thin, submembranaceous, hemispherical, 

 but compressed, and margin sinuate; externally blackish, 

 coated with a fugacious meal. (Phil.) 



Specimens examined from Cooke's Fung. Brit., exs., n. 478, 

 and Eehm's Ascom., n. 301. 



Cenangimn pulveraceum. Fries, Syst. Myc, ii. 

 p. 181 ; Phil., Brit. Disc, p. 347 ; Eehm, Krypt. -Flora', Disc, 

 p. 228; Sacc, Syll., viii. n. 2293. 



Erumpent, caespitose or sometimes gregarious, but distinct 

 from each other, subglobose and closed at first, becoming 

 hemispherical, margin incurved and closed when dry, disc 

 pale yellow, externally blackish, but densely covered \rith 

 white or greyish meal, narrowed below into a short, stem- 

 like, hard base, which is blackish within, up to 1 mm. across ; 

 excipulum brownish, consisting of densely interwoven 

 hyphae ; asci clavate, pedicel slender, 8-spored ; spores irre- 

 gularly 2-seriate above, elliptic-oblong, ends obtuse, hyaline, 



I 2 



