44 



A. diplodioides, B. & C. (Jrev. IV, p. 9. 



''Spots orbicular, mycelium interrupted. fVrithecia minute. 

 Sporidia oblong, obtuse, uniseptate, li.irht brow r n, 8 // long." 

 On leaves of Andromeda acuminata, Alabama. 



A. spiirca, B. & (<. (Irev. IV, p. 9. 



"Perithecia scattered, dot-like, surrounded by short, articulated. 

 submoniliform, radiating threads, which are joined together laterally 

 in twos, sometimes forked at the apex." 



On leaves and stems of Hyptis radiata, Carolina and Alabama. 



A. Wrightii, B. & C. Grev. IV, p. 10. 



" Mycelium very thin. Perithecia brown, granular, crowded, like 

 little grains of gunpowder, surrounded by cirrhate threads. Asci 

 clavate, short/' 1 Texas (C. Wright.) 



"Apparently on some smooth Cucurbit." 



A. congregata, B. & C. N. Pac. Expl. Exp. p. 129, No. 169. 



Perithecia very small, shining, gregarious. Mycelium (subicu- 

 lum) very scanty, mouth round. Asci yellowish (" helvolus "). Spo- 

 ridia narrow. 



On leaves, Nicaragua. 



With the habit of Sphcerella maculiformis. 



A. bullata, B. & . N. Pac. Expl. Exp. p. 129, No. 170. 



Spots orbicular, on project ing portions of the matrix, hyphse inter- 

 woven into a compact but thin, and here and there cellulose stratum. 

 Perithecia prominent, scutellate, margin fimbriate. 



On leaves, Nicaragua. 



With the habit of Strigula. 



A. ostiolata, B. & C. N. Pac. Expl. Exp. p. 129, No. 166. 



Punctiform, black. Ostiolum distinct, papilliform. Mycelium 

 reduced to a mere border around the perithecia (" subiculo nullo nisi 

 peritheciali.") 



On the upper surface of leaves with Cephaleurus virescens, 

 Nicaragua. 



MICROTHYKIUM, Desm. 



Ann. Sci. Nat. XV, p. 137. 



Perithecia superficial, flat or plano-convex, niembranaceous, per- 

 forated in the center, margin subfimbriate. Asci mostly obovate, 

 8-spored, without paraphyses. Sporidia oblong or fusoid, continuous 

 or uniseptate, hyaline. 



