626 



;i lit il- more in flic center, with the sterile margin thinner. Ostiola 

 vliirlitlv papillose, prominent like those of Nummularia Bulliardi. 

 Perithecia moiiosticlimis. oblong, about J mm. high, closely packed, and 

 more <>r less laterally compressed. Asci cylindrical, 90-100 // (p. sp.). 

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

 X. IlnUnirdi. Sporidia nniseriate, oblong-navieular or ine<]iulaterally 

 elliptical, pale yellowish-brown, 1 2-1 6 x 5-7 //, mostly with a single 

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



On bark. Kansas (Cragin). 



N. rii m pens, Cke. Grev. XII, p. 8. 



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

 Exsicc. Rav. F. Am. 354. 



Orbicular or elliptical, J-l cm. diam., or by confluence 2 cm. or 

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

 l>y the ruptured epidermis, roughened by the slightly prominent ostiola. 

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

 115x10 IJL. Sporidia uniseriate, hyaline, then opake, elliptical, with 

 ends subacute or rounded, 12-15 x 7-9 p.. 



On bark, Galveston Bay, Texas (Ravenel). 



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

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

 and rather more acutely pointed sporidia: 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 exutans, Cke. in Ann. N. Y. Acad. 1. c. 



Broadly effused, black, subcuticular, soon ermnpent, 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 J 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, 10-15x6-8 a. 



On bark, Galveston Bay, Texas (Ravenel). 



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

 -troma and depressed-globose perithecia. 



