462 SPH^EONEMEI. 



Gen. 134. CYTISPORA, Fr. 



Peritliecia irregular, or compound and radiating ; spores mi- 

 nute, mostly curved, oozing out from a common spot in the form 

 of globules or tendrils. — Berh. Outl. p. 322. Eng. Fl. v. p. 281. 



All the species of Ciitiqwra are merely conditions of different species of 

 Valsa, &c. The following are given in Berkeley's outlines : — 



Cyfispora ruhescens. Fr. On dead twigs o^ Rosacece. 



CytLrpora chrysosperma. Fr. On dead poplar. 



Cytispora ca/rphosjierma. Fr. On dead twigs of 7tOsace<K. 



Cyfispora leucosperma. P. On various trees. 



Cytisporafngax. Fr. On dead willows. 



Cytispora Herulersonii. B. & Br. On twigs of Pi.osa arvensis. 



Cytispora pinastri. Fr. On fallen pine leaves. 



Cytispora guttifera' Fr. On dead willow twigs. 



Gen. 135. MICROPERA, Lev. 



Perithecia innate, membranaceous, gaping above, without any 

 common ostiolum ; spores simple, linear. — Berh. Outl. p. 322. 



1375. IVIicropera drupacearum. Lev. '* Cherry Micropera." 



Perithecia pustulate, innate, sub-cylindrical, deformed by 

 mutual pressure ; ostiola white ; spores curved above. — Lev. 

 Ann. Sc. Nat. May, 1846, p. 283. Kl. exs. no. 1960. B. ^ Br. 

 Ann. N.H. no. 437. Pers. Ic. Fid. t. 20, f. 1. Fckl. exs. no. 638. 



On dead branches of cherry. King's Cliffe. 



Probably not autonomous. Tulasne states it is the Pycnidia of Dei'/natea 

 Cerasi. 



Gen. 136. DISCELLA, B. & Br. 



Perithecium spurious, nearly simple, some- 

 times obsolete above, or entirely wanting, 

 and hence excipuliform ; spores elongated, 

 simple, or uniseptate. — Berk. Outl. p 323. 

 B. ^- Br. Ann. N.H. no. 426. {Fig. 175.) 



The perithecium is so little distinct from the stra- 

 tum of sporophores. that it is frequently difficult, in 

 Fig. 175. examining a slice under the microscope, to say that it 



exists though the two together are sometimes of considerable thickness, 

 neither is the limit between the external cells and those of the matrix very 

 accurately defined. In the same species it is sometimes entirely wanting 

 above, and the sporophorous stratum merely covered by the cuticle, which at 

 last splits, and exposes the excipuliform disc, while in other cases the spu- 

 rious perithecium extends all round, being intimately blended with the cuti- 

 cular cells. The cavity is essentially simple, but there is sometimes a. slight 

 fold or two below, showing a tendency to become multicellular, occasionally 

 the centre is vacant, and the perithecium then forms an irregular ring. — 

 B.6:Br. 



