376 



Perithecia scattered or subgregarious, sunk in the substance of 

 the leaf with the papilliform ostiolum erumpent, globose or subellip- 

 tical, black, with branched, creeping mycelial threads around the base, 

 200-250 [i diam. Asci clavate, substipitate, 8-spored, 70-80 x 8-0 //. 

 with filiform paraphyses. Sporidia fusoid, subinequilateral and often 

 slightly curved, 5-septate, the second cell from the upper one thicker 

 than the others, honey-yellow, 19-22x4-5 a. 



On culms of Phragmites, Iowa (Arthur), on Andropogon muri- 

 catus, Louisiana (Langlois), on culms of some grass, Long Island, N. Y. 

 (Zabriskie). 



L. Nardi, (Fr.) 



Sphczria Nardi, Fr. S. M. II, p. 520. 

 Leptosphocria Nardi, Ces. & De Not. Schema, p. 62. 

 Pleospora Nardi, Fckl. Symb. p. 137. 

 Exsicc. Rab. Herb. Mye. 640. Fckl. F. Rh. 855. 



Perithecia scattered, buried, finally erumpent, globose, black, flat 

 and perforated above, 170-190 fi diam. Asci cylindrical, subattenu- 

 ated below, sessile, 8-spored, 70-80 x 10J 12 p, with filiform paraph- 

 yses. Sporidia biseriate, fusoid, subinequilateral or slightly curved, 

 5-septate, the third cell mostly a little swollen, yellow, 23-25 x4-5 /j. 



On Nardus striata, Nanortalik, Greenland. 



L. heloniaefolia, (C. & E.) 



Sphczria heloniczfolia , C. & E. Grev. VII, p. 16. 

 Leptosphczria heloniczfolia, Sacc. Syll. 3102. 



This is a stylosporous fungus (Hendersonia) and not ascigeroos, 

 sporules 1-2-septate, brown, 20 x 8 /i. 



L. Rousseliana, (Desni.) 



Sphczria Rousseliana, Desm. XVII, Not. in Ann. Sci. Nat. III. Ser. torn, n, p- 



355- 

 Leptosphczria Rousseliana, De Not. Schema, p. 236, 

 FJxsicc. Rab. F. E. 2048. Desm. PL Crypt. Ed. I, 2082. id. Ed. 2d, 1782. 



Perithecia minute, scattered or subapproximated, globose, \ mm. 

 diam., immersed, covered by the blackened cuticle, gray inside. Osti- 

 olum erumpent, punctiform. Asci elongated, subclavate, 80-100 fi 

 long. Sporidia subfusiform, 20-25 /i long, ends obtuse, straight or 

 curved, olivaceous, 4-5-septate. 



On leaves of Colpodium latifolium, Greenland. 

 *** Sporidia 6-12-septate. 



L. Sporoboli, Ell. & Galw. Journ. Mycol. V, p. 66. 



Perithecia scattered, erumpent-superficial, subhemispherical, gla- 



