642 



occurring either singly and quite evenly scattered over the matrix or 

 loosely aggregated in clusters or groups of 3-8 perithecia standing 

 side by side, their bases united in a thin stroma of a dirty brownish- 

 black outside, and rusty-yellow within, with ^-| their upper part free, 

 subtruncate above, with a minute, papilliform ostiolum. Asci, includ- 

 ing the slender base, 110-120 x 4 //. Sporidia uniseriate, oblong, pale 

 brown, 1-2-nucleate, 7-9 x3 p.. Paraphyses filiform, abundant. 



On dead limbs and trunks of Sassafras, from New York to Florida, 

 and west to Ohio, mostly on the bark, but also on the wood. 



fl. smilacicolum, Howe, Bull. Torr. Bot. Club, VI, p. 31. 



"Small, black, pulvinate, roundish or elliptical, irregular when 

 confluent. Perithecia subglobose. Asci cylindrical or subclavate. 

 Sporidia brown, subcymbiform, 15-20 x 7 J ju, usually with several 

 nuclei. 



On dead stems of Smilax. The sporidia are rarely elliptical at 

 maturity, but sometimes pointed at both extremities." 



H. culmoruni, Cke. Grev. VII, p. 51. 



Exsicc. Rav. F. Am. 351. Ell. & Evrht. N. A. F. 2d Ser. 2116. 



Stroma convex, 2-4 mm. across, olive-gray, then black, at first 

 nearly even, then tuberculose from the projecting perithecia, finally 

 deciduous, appearing first as olive-gray, appressed, thin, rather indefi- 

 nitely limited patches 2-4 mm. across, consisting of closely-packed, 

 erect, subsimple, brownish hyplrne 15-20 x 2-2 J //, bearing at their 

 tips oblong or ovate-elliptical, hyaline conidia 4-6 x 2-2| p.. These 

 patches soon become tuberculose from the scattered, incipient peri- 

 thecia (3-15 in number), soon enclosed in the dull black stroma, whose 

 surface is tuberculose-roughened by their obtuse, projecting apices. 

 In the specimens in Rav. F. Am. 351, the perithecia are mostly soli- 

 tary but still enclosed in a stroma more or less distinct. The inner 

 cavity of the perithecia is \-\ mm. diam. Asci subcylindrical, 75- 

 85 x 8-10 p (p. sp.), with a short stipitate base and with evanescent 

 paraphyses. Sporidia oblong-navicular or fusoid-navicular, mostly 

 obliquely uniseriate, 2-3-nuclcate, brown, 15-18 x 6 ju. Resembles in 

 some respects H. Sassafras, Schw. 



On dead culms of Arundinaria, Georgia (Ravenel), Florida 

 (Calkins), Louisiana (Langlois). 



H. polyspermum, Mont. Syll. Crypt. No. 736. 



Exsicc. Rav. F. Am. Nos, 346 and 347 Ell. & Evrht. N. A. F. 2d Ser. 1788. 



Stroma effused, applanate, abruptly limited, of a purplish rust- 



