348 



Peritliecia very small, scattered, subsuperficial, conical, very 

 black, clothed at the apex with a few short, rigid, black hairs. Asci 

 ovate-oblong, obtuse at each end, somewhat curved, thick-walled, 

 8-spored, 112x24//. Sporidia imbricate-subbiseriate, oblong-ovate, 

 obtuse, straight, 5-septate and muriform, constricted in the middle 

 brown, 34 x 13 a. 



On leaves of Salix Groenlandica, Franz Joseph's Fiord, Green- 

 land. 



Pyr. relicina, Fckl. Symb. p. 215. 



Pleospora polytricha, Tul. Sel. Carp. II, p. 269. 



Peritliecia innate-erumpent, sclerotoid, pale within, clothed with 

 scattered, rigid, cuspidate, pluriseptate, black bristles 130-150x10- 

 12 fi. Asci clavate, 150-170x35-40 /i, with a short, thick stipe. 

 Sporidia biseriate, rarely uniseriate. oblong-elliptical, 3-5-septate. 

 with a partial longitudinal septum, pale yellow, 35-46x20-30 p.. 



On leaves of Triticum repens, Albany, N. Y. (Peck). 



Pyr. calvescens. (Fr.) 



Sphczria calvescens, Fr. Scleromyc. Suec. Exsicc. No. 401. 

 Sphczria eriophora, Cke. Grev. V, p. 153. 

 Pleospora calvescens, Tul. Sel. Carp. II, p. 266. 

 Pyrenophora calvescens, Sacc. Syll. 3845, Cke. Syn. 5142. 

 Leptosphceria eutypoides, Pk. 38th Rep. p. 105. 

 Exsicc. Fckl. F. Rh. 2152. Rab. F. E. 2216. Rehm Asc. 439. Thum. M. U. 266. Ell. 

 N. A. F. 592. 



Peritliecia gregarious, on extensive blackened areas of the stem, 

 superficial, globose or depressed, 250-300 p. diam., clothed, especially 

 below, with spreading, black, bristle-like hairs, which finally disap- 

 pear; at length collapsing to plane or concave, with a distinct, papilli- 

 form ostiolum. Asci cylindrical, short-stipitate. 8-spored, 75-110 x 

 10-12 /i, with abundant paraphyses. Sporidia uniseriate, ovate-oblong, 

 rounded at both ends, often rather narrower below, more or less con- 

 stricted in the middle, 3-septate, with an imperfect, longitudinal sep- 

 tum, 18-22x8-9 p. 



On dead stems of C 'henopodium, Newfield, N. J., and New York 

 State. 



Pyr. ciliata, (Ell.) 



Pleospora ciliata, EH. Bull. Torr. Bot. Club. VIII, p. 125. 

 Pyrenophora ciliata Berlese Mon. p. 237, tab. XII, fig. 6. 



Peritliecia at first covered by the cuticle, but at length partially 

 erumpent, 125-175 p diam., hemispherical. Ostiolum large, surround- 



