iiS Field Columbian Museum — Botany, Vol. i. 



Spots suborbicular or subangular, 3 to 4 mm. diameter, dull 

 white with a narrow, darker and sometimes slightly raised border. 

 Perithecia epiphyllous, numerous, sublenticular, pale brown, 

 coarsely cellular, broadly perforated above, 100 to 115 11 diameter. 

 Sporules numerous, curved, obtuse, continuous, hyaline, 25 to 45 

 X 2 to 3 p.. 



Closely allied to S. Sisymbrii Ell., but that has the spots green- 

 ish at first and never becoming more than whitish and the spor- 

 ules I to 3-septate. 



S. RuBi West. 



On living leaves Rubus Canadensis, Wood Co., Lockhart's Run, 

 i8gi {Mi/Ispai/gli). On same host July 26, 1894 {Niittall, 1627). 



S. Corni-maris Sacc. 



On Cornus florida, alt. 1,700 ft., July ig, 1894 {^Niitiall, 161 2). 



S. cornicola Desmz. 



On Cornus altei'nifoUa, Sewell Valley, Aug. 6, 1894 [Ni/itall, 

 1647). 



S. KALMI^COLA (Schw.) B. & C. 



On living leaves Kalmia latifolia, 1891, Monongalia Co., at 

 Camp Eden i^Millspaiigh). 



S. ochroleuca B. & C. 



On leaves Casia/iea deniata, June 30, 1894. Maximum number 

 of perithecia in a single macula 20 {Nuttall, 1579). 



S. microsperma Peck. 



On Bet Ilia lenta, alt. 1,200 ft., Oct. 24, 1894. Sporules + 18 x 

 .25 iJ. {Nuttall, 1722). 



S. Polymniae E. & E., Proc. Phila. Acad., 1894, 368. 



Type habitat: On leaves Polyinnia Uvedalia, June 29, 1894 

 {Nuttall, discov. 1595, 543)- 



Spots, scattered, angular, limited by the veinlets, 2 to 4 mm. 

 diameter, dirty green. Perithecia epiphyllous, minute, 75 /j 

 diameter, scattered, innate, inconspicuous. Sporules filiform, 

 continuous, 35 to 50 x i to 1.25 ,«. 



S. Trautvetteriae E. & E., Proc. Phila. Acad., 1894, 368. 



Type habitat: OnTrautvetteriaCarolhiensis, July 20, 1894 (iV«//- 

 all, discov. 1632, 564). 



Spots irregular, subangular, partly limited by the veinlets of 

 the leaf, often elongated and acute at one end, brownish-black, 

 with an irregularly shaped white center, which is well defined, 

 angular, 3 to 5 mm. in the longer diameter. Perithecia epiphyl- 

 lous, but also visible below, small (65 to 75 ,a), scattered, dark. 

 Sporules abundant, nearly straight or slightly curved, continuous, 

 22 to 30 X 2 p.. 



Differs from ^. Anemonis Desm. in its broad, dark-margined 

 white-centered spots, and rather longer and thicker sporules. 



S. hyalina E. & E., Proc. Phila. Acad., 1894, 368. 



Type habitat: On Viola primuhvfolia, July 26, 1894 {Nuttall, 



