4i8 PLANT DISEASES 



spots like the spermogonia, gregarious, cylindrical, whitish, 

 splitting from apex to base into reflexed filaments, aecidio- 

 spores warted, catenulate, yellowish, 22-45x19-35 /*; 

 teleutospores oblong-fusoid, i-septatp, not constricted, 

 yellow, 90-120X15-18 fj., with very long, slender, hyaline 

 pedicels, forming subgelatinous, elongato-clavate, com- 

 pressed, simple or bifid, yellowish-orange masses about 

 I cm. long, or sometimes longer. 



Gymnosporangium confusum, Plow., Bn't Ured. and 

 Ustilag.y'^.2-^2. — Pseudoperidia on thickened, reddish spots, 

 orange above, and often surrounded by a reddish or purple 

 line, cylindrical, or cylindric-fusiform, opening by lateral, 

 longitudinal fissures, at length fimbriate ; spores sub- 

 globose, pale brown, 15-20 /* diam. ; teleutospore 

 mycelium perennial; spore-masses vernal, at first tuber- 

 culate, dark chocolate-brown, almost black, soon becoming 

 cylindrical, often compressed, 5-8 mm. long, then rich 

 chestnut-brown, swelling when moist, and speedily covered 

 with golden-yellow promycelium spores ; spores smooth, 

 oval, or elliptical, generally acute at both ends, of two 

 kinds, the more numerous with hyaline walls and orange- 

 yellow contents, the other with dark brown, thick walls, 

 40-50X20-25 /i, with from 2-4 germ-tubes; pedicel long, 

 80-100 /x, hyaline. 



Phragmidium, Link. — Spermogonia flattened, orbicular; 

 aecidia (Caeomd) in roundish clusters, confluent, and 

 broadly effused ; aecidiospores in chains ; uredospores 

 formed singly at the tips of hyphae ; teleutospores trans- 

 versely 3-many-septate, upper cell with i germ-spore, the 

 remainder with 4 germ-spores each. 



Phragmidium rubi-idaei, Karst., Myc. Fenn. Hypoderm., 



