HETEROSPH^EUIA. 371 



Genus II. — Heterosph;eria. Grev. 



Perithecium sessile, globose-depressed, umbilicate 

 above, at length open and irregularly torn, thin, cori- 

 aceous, black ; disc thick, placentiform ; sporidia 8. 



Pycnidia similar to the above ; stylospores slenderly 

 fusiform, curved. (Plate XI. fig. 71.) 



Name — trepog, different, ofympa, a sphere ; different 

 from the normal Sphceria. 



1. Heterosphceria patella (Tode). Grev. 



Erumpent, sessile, free, at first more or less olivaceous, 

 at length black, even or striate; disc depressed, rarely 

 open, dirty white, and then crowned with a toothed 

 border ; sporidia biseriate, oblong, rounded at the ends, 

 slightly curved, mostly uniseptate, when mature tri- 

 septate, 13 — 16 x 3 — 4/x ; paraphyses filiform. 



Pycnidia similar to the above, and more generally 

 found ; the stylospores slenderly fusiform, acute at both 

 ends, 25 — 30 x 3'5/ul ; sterigmata short, filiform, some- 

 times branched. 



Asci and stylospores sometimes found associated on 

 the same disc. (Plate XI. fig. 71.) 



Hetevosphazria Patella — Grev., 1. 103; Fries, "Elench.," 

 ii. p. 133 ; Berk., « Outl," p. 379 ; Cooke, " Handbk," 

 No. 2275 ; TuL, " Select. Fung. Carp.," iii. p. 174, t. 18, f. 

 16-22 ; Karat., " Myco. Fenn.," p. 222 ; Gill., " Champ.," 

 p. 188. Sphasria penetrans, a. patella — Tode, " Fung. 

 Meckl.," ii. p. 45, f. 121. Spliairia patella — Pers., " Syn. 

 Fung.," p. 76 ; Fries, " Sys. Myco.," ii. p. 511. Peziza 

 iimbriata — ChailL, " Sec. Fr." Peziza Chailletii — Pers., 

 " Myco. Eur.," i. p. 288. Phacidium patella — Fries, 

 "Elench.," ii. pp. 133, 134; "Eng. Flo.," v. p. 291 ; Rabh., 

 "Krypt. Flo.," i. p. 160. Tympanis patella — Wallr., 

 " Crypt. Flo.," p. 425. 



Exs.— Fries, "Scl. Suec," No. 369 ; Moug. and Nest., No. 

 485; Desm., "Crypt. Fr.," ed. i. No. 215, and ed. ii. No. 

 415; Berk., 289; Rabh., "Herb. Myco.," ed. ii. 413, 447; 



