NEW WEST AMERICAN FUNGI. 19 



Asci (p. sp.) clavate-cylindricalj about 70x7 — 8//, with abun- 



r 



dant paraphyses, 8-spored stipitate. Sporidia overlapping- 

 uniseriate or subbiseriate above, oyate-oblong, 3 — 4-septate, 

 brown, slightly constricted at tbe middle septum, one or 

 both the inner cells divided by a longitudinal septum, 



12—16x5—6/^. 



Didymosphaeria graminicola, E. & E. 



On dead culms of Panicum virgaium, Rockport, Kansas, 

 March, 1893. Bartholomew. 



Perithecia scattered, subcuticular, black, ^ — | mm. diam.j 

 the apex prominent but closely covered by the thin cuticle. 

 Asci cylindrical, 40— 50x6— 7/f. Sporidia uniseriate, ellip- 

 tical, uniseptate and constricted at the septum, brown, 8—9 

 x4/^, ends obtuse. 



Pleospora hysterioides, E. & E. 



On dead culms of Andropogon Jiufans, and Sj^orohnJus 

 asper, Eockport, Kansas, March, 1893. Bartholomew, No. 972. 



Perithecia scattered or gregarious, subseriate, at first cov- 

 ered by the epidermis, but soon erumpent-superficial, hemi- 

 spheric-globose, black, often with a narrow fringe of 

 brown hypheB around the base, orbicular, 150/^ diam., or 

 oftener elliptical 200— 300x1 SOyu, or even linear-oblong (by 



confluence)? | — | mm. long, ostiolum (in the orbicular 



forms, a simple round opening, which in the elongated forms 

 becomes elongated so as to extend nearly the length of the 

 perithecium, simulating Hysierium, either rounded or often 

 flattened above). Asci with a very short stipe, oblong or 

 clavate-oblong, rounded at the apex, 60—75x12—18/1 with 

 filiform paraphyses sometimes branched above. Sporidia 

 8 in an ascus, ovate- elliptical, compressed, 3-septate and 

 mostly a little constricted at the septa, especially at the 

 middle one, one or oftener both the minor cells, sometimes 

 all the cells divided by a longitudinal septum on the flat 

 side, straw-yellow, 15— 20x8— lOyu and 6—8/^ thick. Much 

 resembling the sporidia of PI. Andropogonis, Miss., as rep- 

 resented in his figure, but distinct from that species in its 



