52 THE WEST VIRGINIA FLORA 



to 112 /i diameter. Sporules globose or short-elliptical, hya- 

 line, granular, 6 to 8 x 5 to 6 /x. 

 P. Negundinis Sacc. 



On Acer Negundo, July 5, 1894. Sporules 5 to 10 x 3 to 

 7.5 /. (Nuttall, 1631, 560, 561). 

 P. ■ sp. 



On Geuni Canadense, Oct. 24, 1894 {Nuttall, 1733). 

 Spores irregular 4 to 7.5 x 1.5 to 2.5 /x 2-nucleate. 

 P. ACERICOLA E. & E. 



On living leaves Acer saccharinum, Putnam Co., near 

 Buffalo, 1891 (Millspaugh). On leaves A. rubrum, June 

 24, 1894 (Nuttall, 1561). 

 P. Xanthorrhizae E. & Nuttah, Field Mus. Bot., i :i05 (1896). 



Type habitat : On leaves Xanthorrhiza apiifolia, Nov. 

 3, 1893 (Nuttall, discov. 1738, 625). 



Spots subelliptical, dirty-v^rhite in the center with a dark 

 shaded margin, 3 mm. to i cm. long x 2 to 8 mm. wide, 

 finally more or less deciduous. Perithecia seated on the 

 white part of the spots, epiphyllous, subdiscoid, perforated 

 above, 60 to 75 fi diameter. Sporules oblong-elliptical, hya- 

 line, 2-nucleate, 5 to 6 x 2.5 to 3 ju,.. 



Accompanied by a Macrosporium on the same spots. 

 P. sp. 



On leaves Rubus Canadensis, Nov. 3, 1894. Sporules 

 variable in form, 5 x 1.25 to 2 /n (Nuttall, 1747, 627). 

 P. CERCiDicoLA E. & E., Field Mus. ]3ot., 1:105 (1896). 



Type habitat: On leaves Cercis Canadensis, Nov. 21, 

 1894 (Nuttall, discov. 1751). 



Spots suborbicular, .5 to i cm. diameter, rusty-brown, be- 

 coming lighter, paler below, margin narrow reddish-purple. 

 Perithecia epiphyllous, convex, suberumpent, but covered 

 (except the apex) by the epidermis, no to 150 n diameter. 

 Sporules oblong, slightly narrowed and rounded or obtusely 

 pointed at the ends,' hyaline, 2 to 3-nucleate, 15 to 20 x 6 

 to 7 IX. _ 



DiiTers in the character of the spots, and in the presence 

 of a perithecium, from Gloeosporimn Cercidis, E. & E. 

 P. Araliae-E. & E., Proc. Phila. Acad., 1894, 355. 



Type habitat : On leaves Aralia spinosa, Sept. 20, 1895 

 (Nuttall, discov. 1703, 598 588?). 



Spots suborbicular, light-brown with the margin a little 

 darker, 5 to i cm. diameter. Perithecia epiphyllous, some- 

 what flattened, 100 to 150 ^n diameter. Sporules oblong- 

 elliptical, hyaline, 2-nucleate, 10 to 15 x 5 to 6 /x. 

 P. Sassafras Cooke. 



On leaves Sassafras Sassafras, June 28, 1894. Sporules 

 5 to 7 X 2 to 3 //, (Nuttall, 1566). 



