376 



Peritliecia scattered or subgregarious, sunk in the substance of 

 the leal' with the papilliform ostiolmu ermnp en t, globose or subellip- 

 tieal, black, with branched, creeping mycelial threads around the base. 

 200-2.~)0 // diaiii. Asci clavate, substipitate, 8-spored, 70-80 x 8-9 /;.. 

 with filii'orni paraphyses. Sporidia Insoid, subinequilateral and often 

 slightly curved. ."j-septate, tlie second cell from the upper one thicker 

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



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

 c<itux. Louisiana (Langlois), on culms of some grass, Long Island, N. Y. 

 (Zabriskie), 



I,. Nardi, (Fr.) 



Sf>/urjia Xanii, Fr. S. M. II, p. 520. 

 Lepfosptiicria ,\anii\ Ces. & De Not. Schema, p. 62. 

 Pleospora Nardi, Fckl. >Symb. p. 137. 

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



Perithecia scattered, buried, finally eruni])ent, globose, black, flat 

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

 ated below, sessile, 8-sporecl, 70-80 x 10|-12 //, with filiform paraph- 

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

 "-septate, the third cell mostly a little swollen, yellow, 23-25x4-5 [i 



On Nardus xtri.ctu-, Nanortalik, Greenland. 



L. helonifffolia, (C. & E.) 



in lielonicefolia, C. & E. Grev. VII, p. 16. 

 Leptosph(Zria Jicloiiicrfolia, Sacc. Syll. 3102. 



This is a stylosporous fungus (Hendersonid) and not ascigerous, 

 sjtorules 1-2-septate, brown, 20 x 8 //.. 



L. Rousseliana, (Desin.) 



Sphceria Rousseliana, Desm. XVII, Not. in Auti. Sci. Nat. III. Ser. torn, n, p. 



355- 



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

 Exsicc. Rab. F. E. 2048. Desm. PI. Crypt. Ed. I, 2082. id. Ed. 2d, 1782. 



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

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

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

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

 curved, olivaceous, 4-5-septate. 



On leaves of Colpodium I at if 61 rum, Greenland. 



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



Perithecia scattered, erumpent-superficial, subhemispherical, gla- 



