290 



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

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

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

 ridia biseriate, cymbiform or fusoid, often more oi 1 less curved, unisep- 



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

 On living leaves of Desmodium canescens, Missouri. 



S. Sesbjinise, E. & E. Joimi. Mycol. IV, p. 98. 



Densely gregarious, erumperit, perithecia 80-100 /j. 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 

 31-4 //, ends obtuse. Preceded by a Macrosporium with short, 

 crooked, septate hyphae, 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 steins 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 J mm. diam., ostiolum 

 acute. ASCI oblong, 40-45 x 12-15 ,, without paraphyses. Sporidia 

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

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

 inunda, 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. Dahlise, 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 /2. 



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



S. Aquilegia, Ell. & Oalw. Journ. Mycol. V, p. 66. 



Perithecia scattered on the leaves and petioles, erumpent, rather 

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

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

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

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

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

 22x9-11 p, each cell 1-3-riucleate. 



