246 PROCEEBINGS OF THE ACADEMY OF [1890. 



Potsdam, N. Y., 1857. Perithecia oespitose, ovate, h-i mm. 

 diam. seated on the surface of the inner bark without any evident 

 stroma and bursting through the epidermis in compact groups of 3 

 -6, densely clothed with a greenish-yellow farinaceous coat, only 

 the prominent ostiolum becoming bare and black, Asci clavate-cy- 

 lindrical, 150-175 x 14-18 ,'j.. with abundant paraphyses. Sporidia 

 biseriate, oblong-elliptical, mostly a little curved, 7-10-septate with 

 very faint interru])ted longitudinal septa, hyaline at first, finally 

 quite dark brown, 20-30 x 10-12 >j.. The sporidia are certainly 

 muriform though the longitudinal septa are very faint. AYe at first 

 supposed this to be the mature state of Nedrla aurigera B. & Rav. 

 but a careful examination of the specimens of that species in N. A. 

 F. and Rav. F. Am. failed to reveal any longitudinal septa in the 

 sporidia which as well as the perithecia are also smaller than in this 

 though apparently mature. Near Th. virens, Hark. 



Chilonectria crinigera. 



On bark of dead Fraxinus vlridis, Lincoln, Nebraska, Nov., 1888. 

 H. J. Webber, No. 18. Perithecia cespitose 3-12 on a tubercular 

 stroma in compact clusters 1-2 mm. across, the single perithecia sub- 

 globose and about i mm. in diam. covered at first with a brownish 

 farinaceous coat, becoming nearly black, rounded and obtuse above 

 with a papilliform ostiolum which is slightly collapsed when dry. 

 Asci clavate-cylindrical, 65-75 x 12-15 /-/.. rounded and obtuse above, 

 contracted below into a stipitate base and overtopped by the 

 abundant paraphyses. The asci are at first filled with innumerable 

 minute (3 x J ,a.) allantoid hyaline sporidia but in what we take to 

 be the mature state these minute sporidia appear to be transformed 

 into eight biseriate, globose yellowish-hyaline, 5-7 ,a. diam. sporidia 

 which while lying in the asci are faintly marked with radiating 

 lines and when free are surrounded with about a dozen radiating 

 hyaline filaments 8-10 ,'j-. long and extending out from all sides of 

 the sporidium like rays from a star. 

 Nectria sambuci. 



On Sambucus Canadensis, Lincoln, Nebraska, Aug., 1888. H. 

 J. Webber. Cespitose on a tubercular base (Tubercularia Sam- 

 buci, Cda.). Perithecia 4-12 on a strouia, ovate-globose, pruinose 

 pale red, about i mm. diam. Strongly collapsed above when dry. 

 Ostiolum papilliform, finely fimbriate. Asci oblong clavate 50-60 

 X 6-7 /jt. (p. sp.) without paraphyses. Sporidia biseriate oblong, uni- 

 septate, straight or slightly curved, hyaline 12-20 x 32-42 />.. The 



