478 



dehiscent, erumpent around the margin of a grayish disk which pierces 

 the epidermis and is rather loosely embraced by it. Asci clavate. 

 ]). sp. al)out 35 x 6 11. Sporidia conglobate, allantoid, hyaline, slightly 

 curved, 8-11 x 1J-2 /i. Spermatia (fide Karst) elongated, 4-6x1 //, 

 somewhat curved. 



On bark of willow, Canada (Dearness), Montana (Kelsey). 



The specc. in M. Marchica have the sporidia a little larger 

 (10-12 x 2 ft mostly), but do not differ otherwise. The species scarcely 

 differs from V. sordida. 



V. claiisa, C. & E. Grev. VIII, p. 13. 



Exsicc. EH. N. A. F. 870. 



Stroma cortical, brown inside. 1-1 g mm. diam., depressed-conical, 

 sul (coriaceous above, not circumscribed. Perithecia 4-8 (sometimes as 

 many as 12 or 15), buried in the lower part of the stroma, |-| mm. 

 diam.. subcircinate around a central spermogonial cell, pierced above 

 with an irregular opening. Necks converging with the obtuse, rough- 

 ish. black ostiola erumpent around the opening in the central cell. 

 Asci cla.vate, p. sp. 40-45 x 6-7 //. Sporidia subbiseriate, allantoid, 

 hyaline, 14-18x3-4 //, slightly curved. Spermatia allantoid, minute, 

 3-4 x 1 fjL. 



On dead limbs of Quercus coccinea, Newfield, N. J. 



In the smaller pustules the bark is only slightly raised and scarce- 

 ly ruptured, but in the larger ones the apex of the stroma is erumpent 

 and loosely embraced by the ruptured epidermis. Accompanying the 

 ascigerous stromata are others containing a single irregular-shaped cell 

 with a thick, compact, light-colored wall, and lined on the inside with 

 basidia bearing fusoid. continuous or uniseptate, hyaline sporules, 8-12 

 x 2|-3 {JL. The outside appearance of this species is almost the same 

 as in V. lutescens, but the sporidia and perithecia are larger. 



V. comma, Pk. 38th Rep. p. 102. 



Pustules small, scattered, at first covered by the epidermis, which 

 is at length longitudinally ruptured. Perithecia 2-5 in a pustule, 

 nestling in the inner bark, black, the ostiola scarcely exserted. Asci 

 clavate, blunt, 50 x 10 //. Sporidia collected in the upper part of the 

 asci 7 allantoid, 15-18 x4 p.. 



On dead branches of Cornus paniculata, Albany, N. Y. 



Differs from the other species on Cornus in its different habit and 

 larger sporidia. 



V. Menispermi, Ell. & Holway, Journ. Mycol. I, p. 4. 



Perithecia circulating in a cortical stroma without any circuni- 



