PLATE 1 
A to E.—Types of orange-rust on Rubus 
A. —Short-cycled, spermogonia and four-celled promycelia. Waxy spores 
heaped up in the sori. 
B. —Short-cycled, no spermogonia, 2-celled promycelia. Yellowish spores waxy. 
C. —Three yellowish short-cycled sori like those in B, other sori long-cycled. 
D.—All sori long-cycled. 
E.—Light orange empty sori, long-cycled; reddish orange sori with waxy spores 
are short-cycled. Two long sori partly short-cycled and partly long-cycled, 
x 12. 
B. C. and D from the same plant. 
