ia6 FIELD COLUMBIAN MUSEUM BOTANY, VOL. i. 



P. funerea Desm. 



On Ipomcea pandurata, Sept. ig, 1895. Spores 23 to 25 x 6 to 

 7.5 fi (Nuttall, 1862, 750). 



i 

 P. Guepini Desm. 



On leaves Rhododendron maximum, R. Catawbiense and Azalia 

 viscosa. Spores 18 to 20 x 8 //, Aug. 2, 1894 (Nuttall, 1149 



P. Jefferisii Ell? 



QnOpulasteropulifolius,spor\\\esio to 15 x 4 to 5 and 25 x 5 n 

 May 7, 1894 (Nut i all, 1509). 



P. Toxica E. & E., Proc. Phila. Acad., 1894, 374. 



TYPE HABITAT: On leaves Rhus radicans, Aug. 18, 1894 (Nuttall, 

 1670, 567). 



Spots and perithecia as in Phyllosticta rhoicola E. & E. Spor- 

 ules clavate-oblong, 4-septate, 12 to 15 x 4 to 5 p., 3 intermedi- 

 ate cells pale brown, end cells short, conical, hyaline, the upper 

 cell with a crest of 3 short, spreading hyaline bristles 6 to 7 /* 

 long. Distance between the two extreme cells 12 //, pedicels 

 shorter than the spores. 



STEGANOSPORIUM Corda. 

 S Castanese Lib? 



On Castanea dentata, Nov. 14, 1893 (Nuttall, 1275, 221). 



S. piriforme (Hoffm.) Corda. 



On dying Acer rubrum, June 12, 1894 (Nuttall, 1553). 



S. muricatum Bon. 



On dead limbs Betula nigra in drift-wood along river, Oct. 21, 

 1895. Spores 35 to 50 x 15 to 18 /i (Nuttall, 1878). 



USTILAGINACE.E. 



USTILAGO Pers. 

 U. SEGETUM (Bull.) Dittm. 



On living heads of wheat and oats, Monongalia Co., near 

 Morgantown; Lewis Co., near Alum Bridge; Taylor Co., near 

 Thornton (MillspaugK). 



U? - - sp. 



On under surface of newly fallen leaves Asimina triloba, Nov. 

 20, 1893 (Nuttall discov. 1288, 233). 



U. MAYDIS (DC.) Corda. 



On living ears and tassels of sweet corn, prevalent in Monon- 

 galia Co. , 1891 ; near Morgantown (Millspaugti). On garden corn, 

 July 31, 1894 (Nuttall, 1636). 



U. Avense Isevis, K. & S. 



On oats, Sewell Mountain, alt. 2,600 ft., Aug. 23, 1894 (Nutt- 

 all, 1678). 



