600 



Asci olavate-subfusoid, paraphysate, p. sp. 45-50 x 12-15 fx. Sporidia 

 crowded, irregularly hiaeriate or sometimes obliquely uniseriate, 

 acutely elliptical, yellowisli-liyaline, continuous, 12-15 x 5-6 pL. 



On leaves of some grass, Alabama (Atkinson). 



Diifers fronr Ph. gramius in its smaller stromata and crowded 

 sporidia. The Alabama specc. agree with those in the Exsiccati quoted. 



Ph. melanoplaca, (Desni.) 



Dothidea melanoplaca^ Desin. Not. 17, p. 33. 

 Phyllachora melanoplaca^ Sacc. Syll. 5151. 



Amphigenous; spots large, indeterminate, opake. Ascigerous 

 cells numerous, small, connate, whitish within, becoming black. Asci 

 ample, 50 fx long. Sporidia ovoid, hyaline, subolivaceous. 



On languishing or dead leaves of Veratrum viride, Catskill and 

 Adirondack Mts., N. Y. (Peck). 



Ph. Dasylirii, (Pk.) 



Dothidea Dasylirii, Pk. Bot. Gaz. VII, p. 57. . 

 Phyllachora Dasylirii, Sacc. Syll. 5149, Cke. Sya. 1123. 



ritromata amphigenous, small, narrow-elliptical, oblong or linear, 

 black, for a long time covered by the epidermis, which is at length 

 split longitudinally. Ascigerous cells few, white inside. Asci oblong 

 or subc-ylindrical. Sporidia crowded or biseiiate, oblong or clavate- 

 obloiig, colorless, 27-40 x 16-18 [i. 



On leaves of some species oi' Da8yUrion{J). Wheeleri)?, Arizona 

 (Pi'ingle). 



Ph. Jiinci, (Fr.) 



SpkcEria Junci , Fr. S. M. II, p. 42S. 

 Dothidea Junci, Fr. Summa, p. 387. 

 Phyllachora Junci, Fckl, Symb. p. 216. 

 Exsicc. Fckl. F. Rh. 1026. — Rab. F. E. 755.— Desm. PI. Cr. Ed. I, 720.— Cke. F. Brit, 2d 

 Ser. 243. 



rftromata gregarious, often confluent, sunk in the substance of the 

 culm, more or less elongated, thin, brown or nearly black, covered by 

 the pustulate-raised epidermis which finally becomes brown and splits 

 with a narrow lanceolate opening. Ascigerous cells sunk in the 

 stroma, finally emergent, forming globose or subcompressed tubercles, 

 subseriate, small. Asci short-stipitate, cylindrical, _8-spored, 60-85 x 

 7-8 ji. Sporidia obliquely uniseriate or partly biseriate, oblong, bi- 

 nucleate (becoming uniseptate)? yellowish-hyaline, 9-10x3-3| ju. 



On various species of Juncus] common", but often sterile or poorly 

 developed. 



