* 



395 



closely braided or twisted together, and about as long as the asci. 

 Well characterized by its perithecia clothed with brown strigose hairs, 

 and its braided sporidia. 



On dead adventitious roots of Sorghum Halapense, and on the 

 lower part of sheathing leaves of (Andropogon) i} . Pointe a la Hache, 

 La. (Langlois). 



This evidently belongs here rather than among the Lophios- 

 tomew. 



0. stictisporus, (C. & E.) 



Sphceria slictispora, C. & E. Grev. VI, p. 96, tab. 100, fig. 36. 

 Ophiobolus stictisporus, Sacc. Syll. 4067. 

 Raphidospora stictispora, 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, 150-210 x 3-4 //, paraphysate. 

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



On dead culms and leaves of grasses, Newfield, N. J. 



The general appearance is that of a Stictis. 



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



Leptosphceria olivacea, EH. Bull. Torr. Bot. Club, X, p. 53. 

 Ophiobolus olivaceus, Sacc. Syll. 7127. 



Perithecia submembranaceous, about 250 ft 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 

 ostiolum. Asci clavate, 75-85x15-18 fju 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 

 3J-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, \-\ mm. 

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

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

 (400 fx and over by 43-15 ft 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 i&Jhe furrowed cavities of 



