Description of Plates. 225 
PLATE VIII. 
Fig. 1.— Zubercinia trientalis conidiophores growing outwards between the 
epidermal cells and producing conidia. x 320. Woronin. 
Fig. 2.—Two conidia of the same germinating. x 320. Woronin. 
Fig. 3.—Conidium of the same forcing its germ-tube between two epidermal 
cells of the host-plant. x 520. Woronin. 
Fig. 4.—Doassansia alismatis. Section of a leaf of Alisma plantago, show- 
ing a receptacle of D. alismatis. x 20. After Cornu. 
Fig. 5.—Teleutospore of the same germinating, showing the septum in the 
promycelium, and apical cluster of promycelial spores. Xx 500. Cornu. 
Fig. 6.—Graphiola phenicis. Three spores germinating, @ has just emitted 
its germ-tube ; in 4 and ¢ the germ-tubes have become promycelia, and are each 
producing a single promycelial spore. x 600. Fischer. 
Fig. 7,—Promycelial spore of the above which has from one end emitted a 
germ-tube, and has become septate and empty. x 600. Fischer. 
Fig. 8.—Spore of the same which has produced a well-developed germ- 
tube. x 600. Fischer. 
Fig. 9.—Tuberculina persicina. Ripe spore just beginning to germinate in a 
weak saccharine solution. x 420. Gobi. 
Fig. 10.—The same further advanced, and developing a promycelial spore 
at its distal extremity. x 420. Gobi. 
Fig. 11.—Apex of promycelium just before the promycelial spore is 
abstricted. x 420. Gobi. ; 
Fig. 12.—The extremity of a branched mycelial hypha producing spores 
from the surface of ripe sclerotium. x 420. Gobi. 
Fig. 13.—Three promycelial spores of various sizes. X 420, Gobi. 
Fig. 14.—Protomyces macrosporus. Mycelial hypha with intercalated spore. 
x 7oo. De Bary. 
Fig. 15-18.—The same in various stages of maturity and germination. 
x 200. De Bary. 
Fig. 19.—The escaped spores. x 200. De Bary. 
Fig. 20.—The same conjugating. x 300. De Bary. 
