418 SPH^RONEMEI. 



Sect 1. Clilorosporce — spores slightly coloured. 



1209. Phoma concentricuxn. Vesm. " Concentric Phoma." 



Spots rounded, whitish, surrounded by a brown band, pseudo- 

 perithecia numerous, concentrical, black, opaque ; spores copious, 

 Tery minute, subglobose. — Desm.Ann.S.N.^iii.p. 189. Berk. 

 Ann. N.H. no. 197. Depazea Agaves, Mont. Ann. Sc.Nat.i.p. 344. 



Common on leaves of Yucca. [Low. Carolina.] 



Having tlie appearance of a Phyllosticta or Depazea. Spores ('005 m.m.) 

 •00019 in. 



1210. Phoma hederae. Desm. "Ivy Phoma." 



Covered, black ; spores hyaline, subglobose. — Desm. exs. no . 

 850. Eng. Fl. Y.p. 284. Berk. exs. no. 90. Fr. El. ii.p. 119. 

 Sphceropsis HedercB. Lev. Ann. Sc. Nat. 1846. Y.p. 296. 



On small dead shoots of ivy. 



Covered witb. the blackened epidermis, which is pierced with a ragged, 

 round, or linear orifice. Spores blackish, not truly globose. — M. J. B. 



Sect. 2. Hyalosporce — spores hyaline. 



1211. Phoma asteriscus. BerTi. " Starry Phoma." 



Unilocular, convex, pitch-brown, margin nebulose, spores ob- 

 long, sub-elliptic. — B. 4' Br. Ann. N.H. no. 394. 



On dead stems of Heracleum. Nov. 



Forming little pitch-brown, ratber convex dots, with a paler cloudy nar- 

 row border. Mass of spores surrounded by a dark cellular stratum, consist- 

 ing of hexagonal cells, confused with the matrix, but scarcely presenting a 

 definite peritbecium. Spores narrow-oblong, sub-elliptic, but by no means 

 fiUform. — B. d; Br. 



1212. Fhom.a nothum.. Berk. " Bastard Phoma." 



Perithecia spurious, here and there elevated below, spores 

 obovate. — B. ^ Br. Ann. N.H. no. 395. 



On dead plane twigs. Feb. 



Pustules slightly raised ; perithecia spurious, orbicular, the base protrud- 

 ing here and there into their cavity. Spores obovate, rather pointed at the 

 narrow extremity. — B. d; Br. 



1213. Phoma lingam. Desm. '* Cabbage Phoma." 



Gregarious ; perithecia irregular, convex, soon depressed and 

 concave, rugose, black. Spores small, oblong, with a sporule at 

 each extremity. — Desjn. Ann. Sc.Nat. (1849^, xi. p. 281. Desm. 



