PLATE 2 
A to C.—-From sections of a young aecidium on Crandall blackberry. No 
Spermogonia, no cell fusions, mostly 1-nucleated spores. D to F.—Spore-chains 
from- aecidium on plant No. 497. G.—A young primordiumn H.—Older sorus; 
all cells 1-nucleated; I to S.—-From strains maturing spermogonia. T.—Spore- 
chain from the long-cycled Gymnoconia on Ruhus occidentalis 
