395 



eiosely braided or twisted together, and about as long as the asei. 

 Well characterized l>y its perithecia clothed with In-own strigose hairs, 

 and its braided sporidia. 



On dead adventitious roots of Sorghum Halapense, and on the 

 lower part of sheathing leaves of (Andropogon)1 Pointe a la Hache. 

 La. (Langlois). 



This evidently belongs here rather than among the Lophios- 

 tomece. 



> 

 0. stictisporns, (C. & E.) 



Sphcsria stictispora, C. & E. Grev. VI, p. 96. tab. 100, fig-. 36. 

 Ophiobolus stictisporus, Sacc. Syll. 4067. 

 Raphidospora sticlispora, Cke. Syn. 4574. 



Perithecia scattered, immersed, and covered by the blackened 

 cuticle which is only slightly elevated, \-\ mm. diam., with a rather 

 large opening above. Asci linear, 150-210x3-4 //, paraphysate. 

 Sporidia capillary, nearly as long as the asci and about tt thick. 



On dead culms and leaves of grasses, Xewliehl. X. J. 



The general appearance is that of a Stict/*. 



0. olivaeeiis, (Ell.) (Plate 28) 



Leptosph&ria olivacea, Ell. Bull. Torr. Bot. Club, X, p. 5;. 

 Ophiobolus olivaceus, Sacc. Syll. 7127. 



Perithecia subniembranaceous, about 250 // diam.. buried in the 

 substance of the stem and covered by the cuticle, which is slightly 

 elevated, stained olive-brown and pierced by the broad, rough, obtuse 

 ostiolnm. Asci clavate, 75-85x15-18 it. Sporidia fasciculate, yel- 

 low-brown, vermiform, 6-7-septate. and when mature, slightly con- 

 stricted at the septa, the third joint from the tip slightly swollen, 75 x 



31-4 ^ 



On dead herbaceous stems, Utah (S. J. Harkness). 



The sporidia are generally slightly bent just below the swollen 

 joint. 



0. Medusa, E. & E. Journ. Mycol. I, p. 150. 



Perithecia membranaceous, scattered, depressed-globose, J-| mm. 

 diam., covered by the epidermis which is not discolored or raised. 

 but merely pierced by the black, punctiform ostiolum. Asci very long 

 (400 p. and over by 43-15 //. broad), containing 8 filiform, curved spo- 

 ridia nearly as long as the asci, and 3-3| p. thick in the middle, grad- 

 ually tapering to each end, yellowish or nearly hyaline, with endo- 

 chrome multipartite. The perithecia lie in the furrowed cavities of 



