6 

 I I 



0. hvsterioides, Schw. 1. c. Xo. 1831. 



, 



Perithecia often longitudinally confluent, riavicular, striate, black, 

 often deformed; dehiscence transverse, lips subobtuse, adnate-erum- 

 pent, visibly contracted towards the base, so that sometimes it beconi - 

 substipitate like a Lophium. Asci diffluent. 



Rare; on old bleached oak wood, Bethlehem, Pa. (Schw.). 



0. cinerascens, Schw. 1. c. No. 1832. 



Perithecia thickly scattered, minute, brown-black, raising the 

 wood into tubercles, marked with a longitudinal cleft, elliptical, innate : 

 at first covered with a veil. The ostioloid cleft is slightly prominent. 



On bare wood of Liriodendron, which is faintly cinerascent, but 

 not covered with a crust, Bethlehem, Pa. (Schw.). 



The fructification of this and the three preceding Schweinitzian 

 <pecies is unknown. The specimens in Herb. Schw. are all sterile, 

 and the species must be considered as very doubtful productions. 



AYLOGRAPHl 31, Lib. 



Crypt. Ard. No. 272. 



Perithecia minute, sublinear, simple or somewhat branched, mem- 

 branaceous, opening with a narrow cleft or crack. Asci short, typically 

 ^-spored and aparaphysate. Sporidia ovate-oblong, uniseptate, hyaline 

 or brown. 



* Sporidia hyaline. 

 A. vagum, Desm. Ann. Sci. Xat. XIX, p. 362. 



Hysterium micrographum, De Not. Micr. Ital. dec. IV, fig. III. 

 Exsicc. Desm. Pi. Crypt, de Franc. Ed. I, 1629. 



Perithecia innate-superficial, minute, black, straight or curved, 

 simple or branching by confluence, amphigenous, scattered; lips closed, 

 forming a narrow ridge or crust along the vertex of the perithecium. 

 Asci ellipsoid, 25-35x12-15 p.. Sporidia obovate-oblong, uniseptate 

 and constricted, hyaline, 10-12 x 4 p. 



On fallen and decaying leaves of Ilex opaca, Newfield, N. J.. 

 and on decaying petioles of Sabal serrulata, Florida (Martin). 



A. Piuorum, Desm. Ann. Sci. Nat. II, Ser. torn. 10, p. 314. 



Exsicc. Desm. Pi. Crypt. Ed. I, 994. 



Perithecia adnate-superficial, scattered or gregarious, linear, 

 -traight or curved, simple or branching by confluence, black; lips 

 closed when dry, slightly open when fresh. Asci clavate, 30-40 x 



