102 FIELD COLUMBIAN MUSEUM BOTANY, VOL. i. 



TRIMMATOSTROMA Corda. 

 T. Americana Thum. 



On Salix nigra, March 21, 1894 (Nuttall, 1437, 410). 



HYPHELIA Fries. 

 H. terrestris Fr. 



On damp ground. June 18, 1893 (Nuttall, ioi(>). 



PHYLLOSTICTA Pers. 

 P. Pavise E. & E. 



On Aesculus octandra hybrida and Hamamelis Virginica, June 10 

 1894 (Nuttall, 1539). (P. sphceropsidea E. & E.} 



P. caryigena Sacc. 



P. Caryce E. & E. On living leaves of Hicoria avata and H 

 microcarpa, June 30, 1894 (Nuttall, 1580). 



P. Celtidis E. &. K. 



On living leaves of Celtis occidentalis, Oct. 10, 1894 (Nuttal 

 1715, 603). 



P. Hamamelidis Pk. 



On living leaves of Hamamelis Virginica, June 10, 1894 (Nuttall, 

 1556). 



P. Catalpae E. & M. 



On living leaves of Catalpa Catalpa, July 25, 1895 (Nuttall, 

 1623). 



P. Sanguinariae Wint. 



On living leaves of Sanguinaria Canadensis, June 29, 1894 

 (Nuttall, 1567). 



P. Ipomceae E. & K. 



On Ipo mcea pandurata, Sept. 19, 1895. Spores 5 to 10 x 2 to 

 2.5 <>. (Nuttall, 1861, 749). 



P. Haynaldi Roum. 



On Ilex verticillata. Oct. 5, 1895. Spores 5 to 8 x 2.5 to 3 // 

 (Nuttall, 1872, 756). 



P. Ribis E. & E. sp. nov. 



TYPE HABITAT: On leaves of Ribes cult. Oct. 21, 1895 (Nut tall 

 discov., 1882, 768). 



Spots large, irregular in shape, .5 to i cm., or often confluent 

 along the margin of the leaf for 2 cm., rusty brown, becoming 

 whitish or grayish, and mostly zonate, definite but without any 

 differently colored border. Perithecia epiphyllous, scattered, 150 

 to 200 <i. diameter, the apex prominent and black. Sporules 

 oblong-elliptical, hyaline, granular and nucleate, 15 to 22 x 6 to 



