No. 115.] aT 
PERONOSPORA GANGLIFORMIS, De By. 
Living leaves of Souchus asper. Warsaw. 
PEZICULA ACERICOLA, Pk. 
Variety gregaria Pk. Receptacles small, gregarious. Bark of 
red maple, Acer rubrum. Karner. September. 
RHYTISMA SALICINUM, Fr. 
Fallen leaves of Salix Cutleri. Mt. Marcy. June. Fertile 
specimens. 
