37 



hyphae, on which are seated the flattened, crowded perithecia 75- 

 100 p diam, of radiate-cellular structure. Asci obovoid or subglobose, 

 8-spored, 30-35 x 1 8-22 p. Sporidia subhyaline, ovate-oblongrunisep-' 

 tate, 15-18x6-7 p. 



On living leaves of Persea palustris, Florida (Martin). 



A. pelliculosa. Berk. Ant. Voyage, Crypt, p. 137. 



Exsicc. Rav. F. Am. 75. 



Mycelium epiphyllous, radiate and branching in a dendroid man- 

 ner, forming black, suborbicular patches J-l cm. diam., often more or 

 less confluent. Perithecia seated on thickened portions of the main 

 branches of the mycelium, depressed-hemispherical, imperfectly col- 

 lapsed above. Asci subglobose, 50-60 p diam., 8-spored. Sporidia 

 oblong-elliptical, uniseptate and constricted, hyaline, 25x19 p (16- 

 20 p long, Sacc.) becoming dark brown, about the same as in Dimero- 

 sporium orbiculare. 



On leaves of Ilex coriacea, Florida (Ravenel). 



A. paupercula, E. & E. Journ. Mycol. IV, p. 121. 



Epiphyllous. Perithecia scutellate, brownish-black, 90-120 p 

 diam., seated on and surrounded by a thin network of brown, branch- 

 ing mycelium. Asci subelliptical, 22-25x12-15 p, contracted below 

 into a short, stipe-like base, 8-spored. Sporidia crowded, fusoid, hya- 

 line, uniseptate, 12-15 x 2 p. 



On living leaves of Jacquinia armillaris, Florida (Curtis, com. 



A. Commons). 



B. Mycelium a marginal fringe around the base of the perithecia. 

 A. discoidea, E. & M. Am. Nat. 18, p. 1148. 



Perithecia hypophyllous, orbicular, slightly depressed in the cen- 

 ter, olivaceous, thin, 500-800 p diam., with an indistinct, reticulated 

 margin. Asci obovate or globose, 30-40 x 30-35 p. Sporidia crowd- 

 ed, clavate-oblong, uniseptate, 12-16x4-5^. 



On living leaves of Quercus laurifolia and of Olea Americana, 

 Florida (Martin). 



This may not be distinct from A. oleina, Cke., but as that species 

 was described and distributed in an immature state, it is now impos- 

 sible to decide. 



A. cupressina, Cke. Grev. VI, p. 17. 



Venturia cupressina, Rehm Asc. 494. 

 Exsicc. EH. N. A. F. 160, 500. Thum. M. U. 1543. 



Mycelium nearly obsolete. Perithecia dark brown, hemispherical 

 or lenticular, adnate, perforated above, 185-200 p diam., with a short. 



