WEST VIRGINIA GEOLOGICAL SURVEY 53 



P. Sambuci Desm. 



On leaves Sauihiicus Canadensis, July 20, 1894 {Niittall, 

 1614). 

 P. Labruscae Thum. 



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

 Lockhart's Run, 1891 {Millspangh). On leaves of V. ocsti- 

 valis and riipestris, June 29, 1894 {Nuttall, 1569). 

 P. cornicola (D. C.) Rabh. 



On Cornus Horida, Nov. 5, 1894 {Nuttall, 1748, 638). 

 P. CooKEi Sacc. 



On leaves Magnolia acuminata, Aug. 9, 1894. Sporules 

 15 to 20 X 6 to 7.5 IX (Nuttall, 1655, 577). 

 P. Tiliae Sacc. , 



On leaves Tilia Americana, Aug. 10, 1894. Sporules 7 

 to 8 X 2.5 to 3 /^ (Nuttall, 1672, 579). 

 P. Chionanthi Thum. 



On Chionanthus Virginica, Aug. 10, 1895. Spots darker 

 than in type (from Portugal). Spores round or oval, 5 

 M or 7.5 X 5 /* (Nuttall, 1833, 724). 



P. LiRIODENDRICA SaCC. 



On leaves Liriodendron Tidipifera, June 16 and Oct. 29, 

 1894. Sporules 7.5 to 10 x 2 to 3 /x (Nuttall, 1571). P. 

 Liriodendri. Cke. 

 P. Ulmi West? 



On leaves Ulmus pubeseens, July 9, 1894. Sporules + 16 

 X 7.5 fji (Nuttall, 1 63 1, 563). 

 P. pi-ioiMiFORMis Sacc. 



On leaves Onercus Prinus and 0. alba, July 4, 1894. 

 Sporules 15 to 30 x 6 to 8 ju, (Nuttall, 1585). 

 P. Castaneae E. & E., Proc. Phila. Acad., 1894, 357. 



Type habitat: On leaves Castanea puniUa (not on Cas- 

 tanea vesca as originally published). July 26, 1894 (Nuttall, 

 discov. 1639, 570). 



Spots orbicular, rust-color, with narrow dark-shaded mar- 

 gin. Perithecia epiphyllous, scattered on the spots, dark, 

 semierumpent, 100 /x diameter, often collapsing. Sporules 

 oblong, hyaline, 5 to 7 x 2 to 2.5 jx. 

 P. Lappae Sacc. 



On Arctium Lappa, July 20. 1894 (Nuttall, 1613). 

 P. DioscoREAE Cooke. 



On lesLves Dioscorea z'illosa, June 29, 1894 (Nuttall, 1570). 

 P. Opaca E. & E. Eield Mus. Bot., 1:106 (1896). 



Type habitat : On leaves of Ilex opaca. Oct. 5, 1895 

 (Nuttall, discov., 1881). 



Spots mostly marginal or terminal, of irregular shape. 

 I and 2 cm. across, dirty-white, with a raised subferruginous 

 narrow border. Perithecia evenly scattered, subepidermal, 



