34 



oblong-cylindrical, 16-20 x 5-6 /j. sporidia yellowish and 2-nucleate 

 at first, finally brown and uniseptate, and more or less constricted at 

 the septum. 



On living stems of Smilax, near Jacksonville, Florida (Calkins). 



Mystrosporium aterrlmum, B. & C, appears to be the conidial 

 stage. 



D. Spartinse, E. & E. Journ. Mycol. II, p. 102. 



The mycelium forms small (2-4 mm. long), oblong or elliptical, 

 black patches consisting of a thick growth of erect, simple, septate, 

 subnodulose, sterile hyphae, nearly hyaline at first, but soon opake, 

 130-175 x 6-9 /i, and pale yellowish, prostrate hyphae, producing 

 fusoid-cylindrical or subfalcate, nucleate conidia 40-60 x 3 p.. Nest- 

 ling among the sterile 'hyphae are black, membranaceous, subovate 

 perithecia \-\ mm. diam.. with a very large opening above. Asci 

 elavate-cylindrical, 75 xl5 //, with imperfectly developed paraphyses. 

 Sporidia 8 in an ascus, oblong-cylindrical, yellowish (nearly hyaline), 

 slightly curved, 3-4-nucleate, becoming uniseptate, 18-20x4-5 ft. 

 Some sporidia were seen imperfectly 3-septate, but one septum seems 

 to be the normal state. This is remarkable for the large apical open- 

 ing more like a half-grown Cenangium than like an ostiolum. 



On dead sheaths of Spartina f)olystachya, Louisiana (Langlois). 



D. capnoides, (Ell.) 



Astertna capnoides, Ell. Am. Nat. 1883, p. 318. 



Mycelium brown-black, branching, septate, epiphyllous. Co- 

 nidia brown, ovate, uniseptate, 10-12x6 fi. Macroconidia brown, ped- 

 icellate, submuriform, 3-septate, 35x15 ju. Perithecia brown-black, 

 subglobose, 50-100 p. diam. Asci oblong-ovate, sessile, 8-spored, 

 35-40 x 11-16 pi. Sporidia hyaline, subcymbiform, uniseptate, 2-seri- 

 ate, 10-17 x 4-6 fi. 



On living leaves of Asclepias Cornuti, Kansas. 



D. conglobatum, (B. & C.) 



Astertna conglobata, B. & C. Grev. IV, p. 9. 



Perithecia hypophyllous, globose, about 50 a, astomous, coarsely 

 cellular, membranaceous, in compact, subconfluent groups of 46 on a 

 subcrustaceous mycelium. Asci obovate, 20-25 x 10 jul, without par- 

 aphyses. Sporidia oblong, uniseptate, hyaline, 6-8 x 2-2| fi. 



Description made out from specimens sent from Maine by Rev. 

 Jos. Blake, on leaves of Arbutus Uva-Ursi. 



