290 



nous or sinuous. Perithecia gregarious, minute, hemispherical, perfo- 

 rated above, black, 70-90 fi diam. Asci oblong-cylindrical, slightly 

 attenuated above, rounded at the apex, sessile, 35-40 x 6-7 fi. Spo- 

 ridia biseriate, cymbiform or fusoid, often more or less curved, unisep- 

 tate in the middle but not constricted, hyaline, 10J-12 x 2|-3| fi. 

 On living leaves of Desmodium canescens, Missouri. 



S. SesbaniaB, E. & E. Journ. Mycol. IV, p. 98. 



Densely gregarious, erumpeut, perithecia 80-100 //. diam., pierced 

 above. Asci 35-40 x 7-8 fi ; paraphyses none. Sporidia biseriate, 

 oblong-cylindrical, uniseptate, but not constricted or curved, 10-12 x 

 3 -4 /a, ends obtuse. Preceded by a Macrosporium with short, 

 crooked, septate hypliae, and oblong, 2-3-septate, muriform conidia, 

 which are soon opake. In general appearance resembles S. granulata, 

 E. & E., but has much smaller sporidia. 



On dead stems of Sesbania macrocarpa, Louisiana (Langlois). 



S. subcongregata, E. & E. Journ. Mycol. II, p. 101. 



Perithecia gregarious or occasionally 3-6 collected in a cluster, 

 erumpent and superficial, ovate-globose, about \ mm. diam., ostiolum 

 acute. Asci oblong, 40-45 x 12-15 /i, without paraphyses. Sporidia 

 biseriate, oblong-cylindrical or clavate-oblong, subhyaline (yellowish), 

 18-23 x 3-4 ju, or, in the clavate form, 4-5 p. wide. Pleospora per- 

 munda, Cke., which appears to be common in the Rocky Mountain 

 region, occurred on the same stem. 



On peduncles of Erigeron salsuginosus, Mt. Paddo, Washington, 

 alt. 6000 to 7000 ft. 



S. Dahlia?, C. & E. Grev. VII, p. 42. 



Perithecia scattered, membranaceous, brown, covered by the epi- 

 dermis, pierced above. Asci clavate. Sporidia biseriate, elliptical, 

 uniseptate, hyaline, 12x4 /i. 



On dead stems of Dahlia, Newfield, N. J. 



S. Aquilegiae, Ell. & Galw. Journ. Mycol. V, p. 66. 



Perithecia scattered on the leaves and petioles, erumpent, rather 

 acutely hemispherical, black, 100-120 fi diam., pierced above and 

 more or less distinctly fringed at the base with brown, creeping hypliae, 

 texture coarsely cellular. Asci obovate-oblong, sessile, 50-60 x 22- 

 25 /u, inequilateral, without paraphyses. Sporidia crowded-biseriate, 

 subclavate-oblong, hyaline, straight, obtuse, slightly constricted, 20- 

 22x9-11 //, each cell 1-3-imcleate. 



