SPH^EEOXEMEI. 463 



1376. Discella carbonacea. B. d- Br. " Black Discella." 



Perithecium black ; spores elongated, sub fusiform, pale jellow- 

 green by transmitted light, uniseptate. — Ann. X.H. no. 426, t. 12, 

 f. 8, d. Phacidium carhonaceum, Fries, exs. no. 210. Berk. exs. no. 

 44. Fckl. exs. no. 1100 {partli/). Stilhospora microsperma, Johnd. 

 FlBer.ii.p.l^'l. 



On dead sallow twigs. Common. 



Forming small scattered disc-like spots, covered with the cuticle, which 

 splits from the centre, and ultimately separates. Perithecia black, generally 

 excipuliforin, bat sometimes extending all round, and then bursting above 

 with the cuticle. 



3.377. Discella Desmazierii. B.^^Br. " Blue-spored Discella." 



Perithecia soft, externally hyaline, internally bluish ; sporo- 

 phores elongated ; spores fusiform, simple, indigo-blue. — Ann. 

 N.H.no.4.il,tA2J.^a. 



On twigs of lime. Norths. 



Forming scattered discs, which however are blacker than rn. D . carhonacea , 

 from the spores being darker. Perithecium delicate, hyaline next to the 

 matrix, then blue, obsolete above ; sporophores elongated, strongly developed, 

 sometimes forked ; spores of a beautiful indigo-blue, truly fusiform, though 

 not much elongated, without any septum, distinctly bordered, larger than in 

 D. carbonacea. — B.d;Bi\ (Fig. IJo.J 



1378. Discella platyspora. B. <^' Br. " Broad. spored Discella." 



Perithecia small, for the greater part deficient above, sporo- 

 phores short, stout, deciduous as well as the oblong, broad, obtuse 

 spores. — A?iJi. N.H. tzo. 428. 



On dead twigs of plane. Batheaston. 



Forming rather minute, slightly raised pustules, perithecia but slightly 

 developed, generally, if not always deficient above; sporophores short, ob- 

 tuse, simple, often breaking ofi'with the oblong, obtuse spores, the cavity of 

 which is simple, but the contents decidedly granular, so as at first to give a 

 granulated aspect to the outer wall — B.d:Br. 



1379. Discella micxospexina. B.^Br. *' Small-spored 



Discella." 



Perithecia black, pallid under a lens ; spores minute, oblong, 

 simple. — B. 4' Br. Ann. X.H. no. 429, 1. 12, f. 8 e. Berk. exs. no. 

 44 {partly). 



On dead sallow twigs. 



Resembling strongly Z). carlionacea , but somewhat larger, and distinguished 

 at once by the minute, oblong, simple spores, several times smaller than in 

 that species. In some pustules the perithecia open by a minute fissure, the 

 li ps of which being elongated by the oozing out of the spores make a spurious 

 ostiolum. — B. (b Br, 



