1890.] NATURAL SCIENCES OF PHILADELPHIA. 241 



by a scanty grayish-black stroma. Asci cylindrical 170-190 x l-")- 

 20 //. contracted below into a short stipe-like base. Paraphyses 

 filiform, abundant. Sporidia uniseriate oblong-elliptical straw- 

 yellow, becoming dark brown, contracted in the middle with three 

 principal septa and several fainter ones (7-9 in all), muriform, 25- 

 30 X 14-1(5 p.. ends at fii'st obtusely pointed, finally rounded. Three 

 main transverse septa are the only distinct and decided ones, the 

 others both transverse and longitudinal being more or less indistinct 

 and interrupted. On PhiJadelphns leivisii ? Helena, iVIontana, 

 March, 1889. Kev. F. D. Kelsey, No. 38. This is with diflnculty 

 distinguished from C berberidis, Gray and might perhaps better be 

 considered a var. of that species from which it seems to difi'er in its 

 broader sporidia. The ascigerous perithecia were accomjianied by 

 others inclining more to ovate, with a .short conic-cylindrical 

 ostiolum and filled with very minute (1-2-2 x V //.) spores. 



Cuourbitaria fraxini. 



On bark of dead Fraxinus, London, Canada, Feb., 1890. J. 

 Dearness, 1461. Perithecia globose, rough, black (white insidej, •} 

 mm. diam. flattened above, with a papilliform ostiolum, seated on the 

 surface of the inner bark in compact clusters of about 8-12 and sur- 

 rounded by the ruptured epidermis. Asci cylindrical, p. sp. about 

 150 X 12-15 //-. with a short, stipe-like base and surrounded by 

 numerous paraphyses. Sporidia uniseriate or subbiseriate, ovate- 

 oblong, constricted in the middle, 5-6 septate and nuiriform, yel- 

 lowish-brown, 25-30 X 10-14 //. 



Cucurbitaria setosa, E. & E. 



Parasitic ? on the tubercular, erumpent stroma of some Diatrype, 

 on dead limbs of Wild Plum (Prumis), London, Canada, March, 

 1890. Dearness, 1493. Stroma black, caruose, 2-3 mm. across, its 

 convex surface thickly covered with the minute parasitic ? perithe- 

 cia which are subglobose about i mm. diam., clothed laterally with 

 stout black, s])reading spines, 25-40 x 7 ,«. Ostiolum either smooth 

 and subpapilliform or more or less distinctly radiate-sulcate. Asci 

 oblong clavate 45-55 x 12 ,'j.. (p. sp.), contracted below into a nar- 

 row, stipe-like base. Paraphyses longer than the asci, evanescent. 

 Sporidia biseriate, subrhomboidal-oblong, hyaline and multinucleate 

 at first, becoming yellowish, 3-5-septate and submuriform, 12-15 x 

 ■ir-5 ,'J: Accompanied by Cornularia Persicae, (Schw.) The crowded 

 perithecia bear a general resemblance to those of Plowrightia mor- 



17 



