376 



Perithecia scattered or subgregarious, sunk in the substance of 

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

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

 200-250 n diam. Asci clavate, substipitate, 8-spored, 70-80 x 8-9 ,//, 

 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 PAmp-wzeies, Iowa (Arthur), on Andropogon muri- 

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

 (Zabriskie). 



L. Nardi, (Fr.) 



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

 Leptosphceria Nardi, 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 erumpent, globose, black, flat 

 find perforated above, 170-190 /i diam. Asci cylindrical, subattenu- 

 ated below, sessile, 8-spored, 70-80 x lOJ-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 fi 



On Nardus stricta, Nanortalik, Greenland. 



L. helonijefolia, (C. & E.) 



Sph(Eria hclonicEfolia, C. & K. Grev. VII, p. i6. 

 Leptosphtsria heloniizfolia, Sacc. Syll. 3102. 



This is a stylosporous fungus {Hendersonia) and not ascigerous. 

 sporules 1-2-septate, brown, 20 x 8 ii. 



L. Ronsseli^na, (Desni.) 



Sphisria Rousseliana, Desm, XVII, Not, in Ann. Sci. Nat. III. Set. torn. li, p. 



355- 

 LepiosphcEria 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, \ mm. 

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

 olum erumpent, punctiform. Asci elongated, subclavate, 80-100 /i 

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

 curved, olivaceous, 4-5-septate. 



On leaves of Colpodium latifolium, Greenland. 

 *** Sporidia &~l2-septate. 



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



Perithecia scattered, erumpent-superficial, subhemisphericnl, gla- 



