SPH^EIACEI. 831 



sporidia uniseriate, colourless, obtuse, slightly constricted, endo- 

 clirome bi])artite. — Curr. Linn. Traws. xxii. ^. 47,/. 116. S.ex- 

 tensa, Fr. Ohs. i.jj. 175, t. 3,/. 2, SJI. ii.jy. 381. E}i;j. Fl. \.p. 

 247. 



var.h. Rhaxnni. Slightly adnate above with the epidermis; 

 contents of the perithecia blackish. — Eng. Fl.Y.p. 2-17. 



On Bhamnus catharticus. Rockingham Forest. 



Bursting forth transversely, the short, crowded, oblong, shining ostiola, 

 being alone visible ; when the epidermis is removed a pale mark is seen 

 round the ostiola from a portion of the cuticle being adherent ; pustules con- 

 nected by a brownish black, fibrous, ambient crust. Stroma fibrous. — M.J.B. 

 Is this really distict from Valsa jihrosa } 



2489. Valsa fibrosa. Fr. '•' Fibrous Spharia." 



Innate, conico-depressed, connected by an effused, ambient, 

 fibrous crust ; stroma fibrous ; ostiola crowded, subrotund, even, 

 shining ; sporidia uniseriate, obtusely elli^^tical, slightly con- 

 stricted, colourless; endochrome bipartite. — Fr. S.V.S. j). 4:11. 

 Curr. Linn. Trans, xxii. t. 47,/. 98. Cooke exs. no. 254. S.fihrosa^ 

 Pers. Syn. t.2,f. 3,4. i^r. /S'.J/. ii.^:). 384. Fries, exs. ?zo. 381. 

 Eng.Fl. Y.p. 247. Diaporthe fibrosa, Fckl. Sym. JIi/c.p. 204. 

 Wnestneia fibrosa, Fclcl. exs. no. 589. 



On blackthorn. [United States.] 



Pustules roundish, slightly raising the epidermis and rendering it pale ; 

 when the epidermis is stripped off" a pale ring is seen round the ostiola, arising 

 from the adherence of the cuticle, connected by a brownish-black, fibrous 

 crust; stroma fibrous ; contents of the perithecia blackish. — M.J.B. 



Sporidia ("0005 in.) "0127 m.m. long. 



2490. Valsa leipheznia. Fr. " Common oak Yalsa.'' 



Pustulate ; stroma cortical, pallid, as well as the erumpent 

 disc; ostiola exserted, ovate, or beaked; sporidia biseriate, 

 colourless, or very pale green, elongate acuminate, frequently 

 slightly curved, endochrome, granular, bipartite.- — Curr. Linn. 

 Trans, xxii. t. 48, f. 137. Fckl. exs. no. 611. Cooke exs. no. 255. 

 S. leiphemia, Fr. S.M.ii.j). 399. Fries, exs.no. 78. Eng. Fl. v. 

 p. 250. S. taleola, Curr. Linn. Trans, xxii. t. ^7,fi. 124. Crypto- 

 spora liphcema, Tul. Carp.\i. p. 179, i. xxiii. /. 15-25. 



On dead oak branches. Common. [Low. & Mid. Carolina.] 



When the epidermis is stripped off the bark appears raised into round, 

 even pustules, with a distinct, pallid, yellowish disc, entirely destitute of 

 any conceptaeulum, by which it is distinguished from .S'. taleola and others. 

 The pustules at length acquire a blackish tinge. — M.J.B. 



Sporidia COOOZ-'OOOS in.) •Oir7--02 m.m. long. 



