33 



*3iisky cells 10-12 /i diain. Asci ovate or oiiovate, '8-spored. Spo- 

 ridia ovate-obloDg, 33-35 x 15-18 fi, hyaline at fii-st, then light brown. 



On leaves of Ilex coriacen and /. opaca, Carolina to Florida. 



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



Exsicc. Ell. & Evrht N. A. F. 2d Ser. 2341, 



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

 ji diam., sparingly clothed with short (30-40 x 3 //), erect, spreading 

 hairs, and seated on a rather scanty mycelium of slender, brovi^n, 

 branching hyphfe. Asci oblong, subsessile, 35^0 x 12-14 [i-, with fili- 

 form paraphyses. Sporidia biseriate, acxitely elliptical, uniseptate and 

 eonstricted, each cell with a large nucleus, 15-18 x 6-7 [j.. 



On leaves of ijynodon dactylon, Louisiana (Langlois). 



With the ascigerous perithecia are many smaller ones (spermo- 

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



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



fixsicc. Ell. & Evrht. N. A. F, 2d Ser. 1J86. 



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

 mous, 112-120 11 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 subsessile, oblong, often inequilateral or bulging on one side, 

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

 oblong, yellowish-brown, 4-nncleate, uniseptate and slightly constricted 

 at the septum, 9-lOJ xA [x. 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 Dimithera humilis, Louisiana (Langlois). 



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



Mycelium composed of prostrate, bro'svn, branching, septate threads, 

 with short, erect branches bearing oblong-clavate, 3-4-septate, brown 

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

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

 tious, black patches |-1 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, rough, about | mm. broad and high, 

 sometimes imperfectly sulcate-striate around the prominent, mammose 

 ostiolum. Asci subcylindrical, 70-80 x 10-14 ft, nearly sessile, sur- ' 

 rounded with abundant filiform paraphyses and containing 8 biseriate, 

 5 



