n8 FIELD COLUMBIAN MUSEUM BOTANY, VOL. i. 



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

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

 Perithecia epiphyllous, numerous, sublenticular, pale brown, 

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

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



X 2 tO' 3 fJL. 



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,. 

 1891 (Millspaugti). On same host July 26, 1894 (Nuttall, 1627). 



S. Corni-maris Sacc. 



On Cormts florida, alt. 1,700 ft. , July 19, 1894 (Nuttall, 1612).' 



S. cornicola Desmz. 



On Cornus alternifolia, Sewell Valley, Aug. 6, 1894 (Nuttall,. 

 1647). 



S. KALMIVECOLA (Schw.) B. & C. 



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

 Camp Eden (MillspaugJi). 



S. ochroleuca B. & C. 



On leaves Castanea dentata, June 30, 1894. Maximum number 

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



S. microsperma Peck. 



On Betula lenta, alt. 1,200 ft., Oct. 24, 1894. Sporules -j- 18 x 7 , 

 .25 n (Nuttall, 1722). 



S. Polymnige E. & E., Proc. Phila. Acad., 1894, 3 68 - 



TYPE HABITAT: On leaves Polymnia 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 /A 

 diameter, scattered, 'innate, inconspicuous. Sporules filiform, 

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



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



TYPE HABITAT: QnTrautvetteriaCarolinensis, July 20, 1894 (Nutt- 

 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 ,u), scattered, dark. 

 Sporules abundant, nearly straight or slightly curved, continuous, 



22 tO 30 X 2 fJL. 



Differs from S. 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 primulafolia, July 26, 1894 (Nuttall, 



