JAN. 1896.* FLORA OF W. VIRGINIA MILLSPAUGH & NUTTALL. 105 



P. - - sp. 



On Geum Canadense, Oct. 24, 1894 (Nuttall, 1733). Spores 

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



P. ACERICOLA E. & E. 



On living leaves Acer sac char inum, Putnam Co., near Buffalo, 

 1891 (MillspaugJi). On leaves A. rubrum, June 24, 1894 (Nuttall, 

 1561). 



P. Xanthorrhizae E. & Nuttall, sp. nov. 



TYPE HABITAT: On leaves Xanthorrhiza apiifolia, Nov. 3, 1893 

 (Nuttall, discov. 1738, 625). 



Spots subelliptical, dirty-white 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 /j. diameter. 

 Sporules oblong-elliptical, hyaline, 2-nucleate, 5 to 6 x 2.5 to 3 /*. 



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 /j. (Nuttall, 1747, 627). 



P. cercidicola E. & E., sp. nov. 



TYPE HABITAT: On leaves Cercis Canadensis, Nov. 21, 1894 

 (Nuttall, discov. 1751). 



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

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

 epiphyllous, convex, suberumpent, but covered (except the apex) 

 by the epidermis, 1 10 to 150/1 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 /*. 



Differs in the character of the spots, and in the presence of a 

 perithecium, from Glceosporium Cercidis, E. & E. 



P. Aralise 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, somewhat flattened, 

 100 to 150 fji diameter. Sporules oblong-elliptical, hyaline, 

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



P. Sassafras Cooke. 



On leaves Sassafras Sassafras, June 28, 1894. Sporules 5 to 7 

 x 2 to 3 /JL (Nuttall, 1566). 



P. Sambuci Desm. 



On leaves Sambucus Canadensis, July 20, 1894 (Nuttall, 1614). 



P. LABRUSC^E Thum. 



On living leaves Vitis cult. (Concord), Wood Co., near Lock- 

 hart's Run, 1891 (MillspaugJi). On leaves of V. astivalis and 

 rupestris, June 29, 1894 (Nuttall, 1569). 



