626 



a little more in the center, with the sterile margin thinner. Ostiola 

 slightly papillose, prominent like those of Nummularia Bulliardi. 

 Pcrithecia monostichous, oblong, about | mm. high, closely packed, and 

 more or less laterally compressed. Asci cylindrical, 90-100 [i (p. sp.), 

 with a short, stipitate base, and with long, stout paraphyses, as in 

 N. Bulliardi. Sporidia uniseriate, oblong-navicular or inequilaterally 

 elliptical, pale yellowish-brown, 12-16x5-7 /z, mostly with a single 

 nucleus and a faint, bead-like apiculus at each end. 



On bark, Kansas (Cragiu). 



N. riimpens, Oke. Grev. XII, p. 8. 



Diatrype rumpens, Cke. Ann. N. Y. Acad. Sci. I, p. 185. 

 Exsicc. Rav. F. Am. 354. 



Orbicular or elliptical, |-1 cm. diam., or by confluence 2 cm. or 

 over, and then more or less irregular in shape, thin, black, surrounded 

 by the ruptured epidermis, roughened by the slightly prominent ostiola. 

 Perithecia monostichous, ovate, | mm. high. Asci cylindrical, 100- 

 115x10 fi. Sporidia uniseiiate, hyaline, then opake, elliptical, with 

 ends subacute or rounded, 12-15 x7-9 //. 



On bark, Galveston Bay, Texas (Ravenel). 



This description is drawn from the specimens in Rav. P. Am. 

 This seems to differ from N. Bulliardi in its less prominent ostiola 

 and rather more acutely pointed spoiidia; nor are there, in the speci- 

 mens we have seen, any very perceptible remains of the overlying 

 membrane. In our collections are specimens of what appears to be 

 the same as those in F. Am., from British Columbia and Louisiana, as 

 well as several of the original Texas specimens from Dr. Ravenel. 



N. exiitans, Cke. Grev. XII, p. 8. 



Diatrype exuians, Cke. in Ann. N. Y. Acad. 1. c. 



Broadly effused, black, subcuticular, soon erumpent, thin (about 

 \ mm.), papillose from the slightly prominent ostiola. Two or three 

 inches long, with an irregular outline, thinner than N. rumpens. 

 Perithecia monostichous, depressed-globose, less than \ mm. diam. In 

 our specimen of this species from Dr. Ravenel, from his Texas collec- 

 tion, the asci have disappeared. The free sporidia are acutely ellip- 

 tical or almond-shaped, rather variable in size, 10-15 x6-8 ,u. 



On bark, Galveston Bay, Texas (Ravenel). 



Differs from N. rumpens in its more broadly effused, thinner 

 stroma and depressed-globose perithecia. 



