814 SPH^RIACEI. 



Sporidia ("0006 in.) "015 m.m. loner, uniseriate, almost colourless, but 

 rather of a green tinge, obtuse, constricted in the middle, uniseptate, con- 

 tents granular and nucleate. Perithecia sometimes scattered. The masses 

 of perithecia surrounded by a black line. — F.C 



2441. Diatrype pyrrhocystis. B. & Br, " Brown Diatrype." 



Irregular ; disc plane or concave ; ostiola black, punctate ; 

 stroma pallid; perithecia brown; sporidia elliptic, uniseptate, 

 binucleate. — B. ^- Br. Ann. N. II. no. 841, ^. 9, /. 10. Cooke, exs. 

 no. 241. Diaporthe pyrrhocystis^ Fckl. Sym. Myc.p. 204. Dialytes 

 decedens, Fckl exs.no. 1983. 



On hazel twigs. March. 



Disc plane or concave, studded with the black shining ostiola. Asci cla- 

 vate. Sporidia biseriate (•00 L in.) "025 m.m. long, elliptic, obtuse, or slightly 

 pointed, uniseptate, slightly constricted, with two large nuclei. The brown 

 perithecia, pallid stroma, and peculiar fruit are the characteristics of this 

 species. — B. d: Br. 



2442. Diatirype incarcerata. B. & Br. " Eose Diatrype." 



Immersed in the inner bark, casting off the cuticle ; perithecia 

 globose ; ostiola conical, elongated ; asci clavate ; sporidia 

 biseriate, oblong, acute at each end, constricted in the middle, 

 uniseptate, quadri-nucleate. — B. ^- Br. Ann. JSf.H. no. 842. 



On rose stems. Twycross. 



Sporidia ('OOCSin.) 'OliO m.m. long. Fruit exactly like that of »§. enterO' 

 Uuca of Currey. 



C. Sporidia multi- nucleate, or multiseptate, hyaline. 



2443. Diatrype undulata. Fr. " Waved Diatrype." 



Effused, interrupted, waved, black, white within ; ostiola rather 

 prominent, subrotund ; asci linear; sporidia uniseriate, sub- 

 ovate, pointed at one end, at length triseptate. — S. undulata, 

 Fers. K>yn.p.21. Moug. exs.no. 371. Fr. S.M.ii.p. 350. Grev. 

 t.223,f.i.? Eng.Fl.Y.p. 241. B. ^- Br. Ann. N.H. no.^U. t, 

 9,/. 9. 



On dead branches. 



Liable to be confounded with some states of B. lata. It may easily be dis- 

 tinguished by being erumpent ; more commonly confounded with B. stigma, 

 from which it differs in the fruit. Sporidia (^•O004.-0007 in.) 'Ol-'OiyZ m.m. 

 long. 



2444. Diatrype strumella. Fr. " Currant Diatrype." 



Bursting forth transversely, depressed, elliptic, nearly plane, 

 black ; stroma cortical ; ostiola cylindrical, even ; sporidia bi- 



