H. Hypoxylon, (Pk.) 



Dothidea vorax, D. alramentaria and D. pilulcrformh, B. & C. Grev. IV, p 

 Epichloe Hypoxylon, Pk. 27th Rep. N. Y. State Mus. p. 108. 

 Hypocrea atramentosa, B. & C. Journ. I^inn. Soc. X, p. 377? 

 Hypocrella Hypoxylon, Sacc. Syll. 5069. 

 Exsice. EH. N. A. F. 683. 



Stroma effused, thin, grayish at first, becoming black, white in- 

 side, continuous or interrupted, extending along the upper surface of 

 the leaf or enveloping the culm for 2 or more cm. in length. Perithecia 

 small, crowded, semiemergent, with papilliform ostiola. Asci narrow, 

 linear, 100-120x5-6 pu Sporidia filiform, multinucleate, hyaline 

 nearly as long as the asci and about 1 // thick. 



On- culms and leaves of living grasses, from Canada to Carolina 

 and Louisiana. 



Var. pilulmformis, B. <fe C, has the stroma tubercular or other 

 wise irregular. Ephelis borealis, E. & E., Journ, My col. I, p. si\. \s 

 only the stylosporous stage of this species. 



EPICHLOE, Fr. 



Summ. Veg. Seand. p 381 



Stroma effused, at first pale and conidiophorous, at length lemon 

 yellow, subcarnose, surrounding the culms like a sheath. Perithecia 

 immersed, with the ostiola scarcely prominent. Asci with 8 filiform 

 sporidia. 



E. typhina, (Pers.) (Plate 15) 



SphcEria typhina, Pers. Icon, et Descr. I, p. 21 



Polystigma typhinum, De Cand. 1. c. p. 338. 



Dothidea typhina, Fr. S. M. II, p. 553. 



Epichloe typhina, Tul. in Ann. Sci. Nat. Ser. IV, t. XIII, p. 18. 



Stromatosphceria^ Grev., Typhodium, L,k. in Fr. S. M. Ill, p. 362. 

 Exsiec. Kz. F. Sel. 344. Rab. Herb. Myc. 578. id. F. E. 54*. 2237 Rehm A- 



Thum. F. Austr. 254. id. M. U. 1065. Schweiz. Cr. in. Sydow M- M. 65. F.ll. & 

 Kvrht. N. A. F. 2d Ser. 1553. 



Stroma pale, thin, surrounding the sheaths and included culms of 

 living grasses, Phleum pratense, Dactylis glomemta (and Qun x. fide 

 Peck), extending longitudinally for 2-5 cm., and bearing in the early 

 stage of growth, small (4-5x3 p), ovoid, hyaline conidia (Sphai 

 typhina, Sacc), finally covered with a layer of semiimmersed. 

 carnose-membranaceous, yellow perithecia. with somewhat prominent 

 ostiola. Asci cylindrical, 150-230x7-9 t a, slightly narrowed above, 

 with the apex truncate and capped with a subhemispherical, hyaline 

 crest, Sporidia 8 in an ascus, filiform, yellowish, multinucleate and 

 nearly as long as the asci. 



