36 THE WEST VIRGINIA FLORA 



F. ViRGINIENSE E. & E. sp. IIOV ? 



Type habitat: On living leaves Aster infiruius, June 29, 

 1894 (Nutfall, discov. 1593, 541). 



POLYTHRINCIUM Kunze & Schm. 



P. Trifolii Kunze. 



On Trifoliniii rcpcns, July 4, 1894 (Nuttall, 1588) 



CLADOSPORIUM Link. 



C. HERBARUM (Pers.) Link. 



On Polygonatum hiflorum, Menispermum Canadcnse, and 

 leaves of Rhus hirta, June 28, 1894 (Nuttall, 1564). 



C. HERBARUM FASCICULARE Corda. 



On Reseda cult., Jan. 28, 1894. Conidia 15 to 18 x 6 to 

 7.5 /x I to 2 septate (Nuttall, 1354). 

 C. NiGRELLUM E. & E., Proc. Phila. Acad., 1893, 463. 



Type habitat : On inner bark of Robinia Pseudacacia 

 railroad ties, Keeney's Creek, Oct. 1893 (Nuttall, discov. 

 1227, 172). 



Hyphse densely tufted, septate, sub-equal, 150 to 200 x 5 

 to 6 /x, tufts effused, subconfluent, forming a black, velvety 

 coat extending over the surface of the bark indefinitely, with 

 the same habit as Macrosporium nigrellum C. & E. Conidia 

 smoky-hyaline, becoming pale brown, variable in size, the 

 smaller ones ovate, continuous or uniseptate, 6 to 8 x 5 /x, 

 the larger ones oblong-elliptical or sub-cylindrical, 2 to 3- 

 septate, 12 to 15 x 5 to 6 /x. 

 C. Triostei Peck. 



On living leaves Triostcnin pcrfoliatum, alt. 1.200 ft., July 

 26, 1894 (Nuttall, 1824). 

 C. epiphyllum (Pers..) Mart. 



On dying leaves Robinia Pseudacacia, July 31, 1893 (Nut- 

 tall, II 39). 

 C. corynitrichum E. & E. 



On leaves of Magnolia Fraseri. Fayette, near Nuttall- 

 burg (Nuttall). 



C. sp. 



On dead decorticated limb Magnolia Fraseri, Sept., 189s 

 (Nuttall, 1853, 739). 

 A most beautiful velvety black form. 

 C. epimyces Cooke. 



On pileus Polyporus varians, Jan. 25, 1894 (Nuttall, 



1341)- 



