448 PROCEEDINGS OF THE ACADEMY OF [1893. 



8-spored, short-stipitate. Sporidia overlapping-uniseriate, short- 

 fusoid, yellowish, 2-septate, scarcely constricted, 10-11 x 2^—6/jl, 

 mostly not over 2J;ji, ends acute. 



Differs from L. Michotii West, in its elliptical perithecia, slender 

 asci and shorter, fusoid paler sporidia. 



Ophiobolus Andropogonis E. & E. 



On dead leaves of Andropogon muricatus, Louisiana. (Langlois). 



Perithecia scattered, subcuticular, elliptical, 220— 250/* in the 

 longer diameter, the apex and papilliform ostiolum slightly promi- 

 nent. Asci clavate-cylindrical, 60-80x8-10//., short-stipitate, with 

 abundant paraphyses. Sporidia linear, yellowish, multiseptate, mostly 

 straight, 40-80 x 2-2 i//. 



In the North Am. Pyrenomycetes this was included in O. Medusae 

 E. and E., but it is distinct on account of its much shorter asci and 

 sporidia, as well as its smaller, elliptical, glabrous, more distinctly 

 prominent perithecia. The habit, however, is the same. 



Diaporthe (Chorostate) Dircae E. & E. 



On dead and nearly decayed limbs of Dirca palustris, London, 

 Canada. July, 1892. (Dearness, No. 2992). 



Perithecia in subcircinate groups of 12-20, buried in the surface 

 of the wood, depressed-globose, &-i mm. diam. , whitish inside, with 

 ostiola convergent and erumpent in a little fascicle, joined together 

 below, their short- cylindrical, J mm. long apices free and slightly 

 projecting through the ruptured epidermis. Asciclavate-cyliudrical, 

 50-60x6-7//, paraphysate. Sporidia biseriate, obi ong-fusoid, straight, 

 4-nucleate, hyaline, 11-13x2^-3//. 



There is no black circumscribing line around each separate group 

 of perithecia, but a continuous black line or stratum running along 

 for some inches in extent, in the wood beneath the perithecia. 



Diaporthe (Chorostate) Juglandis E. & E. 



On dead limbs of Juglans cinerea, Alcove, N. Y. Aug. 1893. (C. 

 L. Shear, JSo. 145). 



Perithecia buried in the unchanged substance of the inner bark 

 without any circumscribing line, circinate, 6-12 together, globose, 

 400-600// diam. , with slender necks converging and rising through 

 the bark, terminating in a dense fascicle of short-cylindrical or hem- 

 ispherical, broadly perforated ostiola, erumpent in a small, convex, 



