Description of Plates. 319 
below, contains all the orange endochrome, and, having grown to a considerable 
-length, has taken three circumnutatory turns. x 475. C. B. P, 
Fig. 13.—Another uredospore of the same, which, after twenty-six hours, 
has become branched as well as having made several circumnutatory move- 
ments. X 475. C. B. P. 
Fig. 14.—Abnormal germination of one of the same uredospores (after 
ninety hours), in which a spore of reserve has been produced at the upper end 
of the germ-tube. x 475. C. B. P. 
Fig. 15.—The germ-tubes of two uredospores of Puccinda graminis enter- 
ing the stomata of a wheat plant. x 475. C.B. P. 
Fig. 16.—Two hyaline paraphyses of the uredospores of Melampsora epttea. 
x 200, C. B, P. 
Fig. 17.-Two capitate hyaline paraphyses of the uredospores of Puccinia 
anthoxanthi, x 200. C. B. P. 
Figs. 18-21.—Development of a teleutospore of Puccinia graminis. X 200. 
De Bary. 
Fig. 22.—Teleutospore of Gymmnosporangium clavariaforme germinating. 
It has protruded two promycelia, one from each segment near the septum. 
The endochrome is passing from the spore into the promycelia, leaving the 
apex of the spores empty. X 475. C.B. P. 
Fig. 23.—The same further advanced. x 475. C. B. P. 
Fig. 24.—Four promycelial spores of the same, three of which have 
germinated, and one has formed a spore of reserve. x 475. C.B. P. 
Puiate IV. 
Fig. 1.—Promycelial spores of Puccinia phalaridis piercing by their germ- 
tubes the epidermal cells of Arum maculatum. X 475. C. B. P. 
Fig. 2.—Teleutospore of Uromyces fabe germinating. Xx 200. C. B.D. 
Fig. 3.—Teleutospore of Puccinda coronata germinating from both cells ; 
both germ-canals are placed laterally. x 250. C. B. P. 
Fig. 4.—Teleutospore of Puccinia arundinacea germinating. x 250. 
C. B, P. 
Fig. 5.--Teleutospore of Phraguidium rubi, three cells of which have 
germinated. x 300. C. B. P. 
Fig. 6.—Teleutospore of Zriphragmium ulmari@ germinating. X 475. 
c. B. P. 
Fig. 7.~Teleutospore of Endophyllum euphorbie germinating ; two of the 
promygefial spores have already emitted germ-tubes while still attached to the 
P celium. xX 475. C. B. P. 
Fig. 8.—Three teleutospores of Melampsora betulina, two of which have 
germinated and are emptied of their endochrome. x 475. C. B. P. 
Fig. 9.—Three teleutospores of Coleosporium senectonis, the upper compart- 
ments of two of which have germinated and produced single promycelial 
spores. x 300. C. B. P. : 
Fig. 10.-——Germination of Chrysomyxa rhododendri. After De Bary. 
Fig. 11.—Gymnosporangium sabing, thin-walled teleutospore germinating 
{12 hours) ; two germ-tubes have been emitted from each segment of the spore. 
x 200, C. BP, 
