33 



dusky cells 10-12 a cliani. Asci ovate or obovate. 8-spored. Spo- 

 ridia ovate-oblong. 33-35 x 15-18 //. hyaline at first then light brown. 

 On leaves of Ilex eoriacea and /. opoca. Carolina to Florida. 



D. erysipheoides, E. & E. Journ. Mycol. IT, p. 121. (Plate 8) 



Exsicc. EH. & Evrht N. A. F. 2d Ser. 2341. 



Amphigenous. Perithecia scattered, astomous, globose, 100-130 

 JJL diam.. sparingly clothed with short (30-40x3 /JL). erect, spreading 

 hairs, and seated on a rather scanty mycelium of slender, brown, 

 branching hyphae, Asci oblong, subsessile, 35-40 x 12-14 a. with fili- 

 form paraphyses. Sporidia biseriate, acutely elliptical, nniseptate and 

 constricted, each cell with a large nucleus. 15-18 x 6-7 a. 



On leaves of Cynodon dactylon, Louisiana (Langlois). 



With the ascigerons perithecia are many smaller ones (spernin- 

 gonia) containing a few globose, brownish sporules 4-5 a cliam. 



D. Langloisii, E. & E. Journ. Mycol. II. p. 129. 



Exsicc. EH. & Evrht. X. A. F. 2d Set. 1786. 



Perithecia gregarious, depressed-spherical, rough, black, subasto- 

 inous, 112-120 p. diam., seated on a thin mycelium of brown, branch- 

 ing threads, forming small, dark colored patches thickly scattered 

 over the upper surface of the leaf, and giving it a mottled appearance. 

 Asci subsc-sile. oblong, often inequilateral or bulging on one side, 

 25-30 x 7-9 //, without paraphyses. Sporidia biseriate, clavate- 

 oblong, yellowish-brown. 4-nucleate. uniseptate and slightly constricted 

 at the septum, 9-10^ x 4 //. Some of the perithecia contain oblong- 

 cylindrical. 2-nucleate. subhyaline. 7-8 x 2 /; stylospores. The peri- 

 thecia have a radiate-cellular structure. 



On living leaves of Dianthew.t hutiitltx. Louisiana (Langlois). 



D. nirabosuni, E &M. Journ. Mycol. II, p. 129. 



Mycelium composed of prostrate, brown, branching, septate threads. 

 with short, erect branches bearing oblong-clavate, 34-septate. brown 

 conidia 35-40x6-8 /JL, and longer (70-80x5-6 ,). erect, straight, 

 septate, opake, sterile branches, the whole forming orbicular, veluti- 

 nous. black patches J-l cm. across, mostly soon confluent, extending 

 along and enveloping the stem for 5 cm. or more. The mycelium 

 finally disappears, leaving a black, smooth, shining surface. Perithecia 

 collected mostly in the center of the spots, erumpent, conical, black, 

 carbonaceo-membranaceous. Tough, about | mm. broad and high, 

 sometimes imperfectly sulcate-striate around the prominent, niammose 

 ostiolum. Asei subcylindrical. 70-80 x 10-14 ,, nearly sessile, sur- 

 rounded with abundant filiform paraphyses and containing 8 biseriate. 



