468 



not black, included in a scanty, wjiitish (becoming brownish) stroma. 

 Sporidia allantoid, yellowish, 6-7x1^//., 



On branches of Rhus radicans. Frequent around Bethlehem, 

 Pa. (Schw.) 



The Valsa Toxici in Cooke's Valsei of the U. S., with brown, 

 uniseptate sporidia is something else. The specc. in Herb. Schw. have 

 sporidia as stated above. 



V. microspora. Cke. «& Plowr. Grev. YII, p. 82, (1879). 



' Valsa miniiteila, Pk. Bull. Tow. Bot. Club, XI, p. 27, (1884). 



Pustules minute. Perithecia 6-20 in a pustule, nestling in the 

 bark, crowded, black. Ostiola black, erumpent in a minute ferrugi- 

 nous disk, which is closely surrounded by the ruptured epidermis. 

 Asci short, clavate or fusiform, scarcely pedicellate, 22-30x5-6 /i. 

 Sporidia allantoid, crowded, 5-6 fi long. 



On bark of beech {Fagu&ferruginea), Canada (Macoun). 



The Canada specimens agree so well with the description of 

 Valsa rrdcrospwa, in Grevillea, and with specimens from Plowright, 

 that there can hardly be any doubt that V. minutella, Pk., and V. 

 microspora, Cke. & Plowr., are the same. 



V. def6rmis, (Fr.) 



Sphesria deformis^ Fr. S. M. n, 398. 



Valsa deformis, (Fr.) Cke. Syn. & Stevenson in Add. to Cke. Valsei of the U. S. 



Pustulate, irregular. Stroma pulverulent, ferruginous. Ostiola 

 solitary or aggregated, globose, at length rostellate. 



On oak limbs, Bethlehem, Pa. (Schw.) Sporidia (sec. Stevenson, 

 I.e.) 61-8^x11//. 



The fungus described by Fries grew on the inner surface of bark 

 of fir trees lying on the ground. Perithecia minute, ovate, covered by 

 a cortical pustule, and lying in a ferruginous stroma. Ostiola erum- 

 pent in the center (of the pustule), without any distinct disk, at first 

 papilliforra, smooth, finally esserted, tentaculate. The Schweinitzian 

 species being on oak is doubtfully synonymous with tliis. 



V. variolkria, (Schw.) 



Sphc^ia variolaria, Schw. Syn. N. Am. 1371. 

 Valsa variolan'a, Cke. Syn. 1785. 



Subpustulate, subconfluent far and wide under the smooth, closely 

 fitting' epidermis, which is stellately ruptured by the prinainent ostiola 

 erumpent at first in a brown disk, which finally disappSars. Peri- 

 thecia suberect, circinate, surrounded by a scanty, light-colored stroma, 

 l>ut without any distinct conceptacle. On a horizontal section, a dark, 



