84 British Uredinee and Ustilaginee. 
phores. There is no observable difference between the 
sporophores produced from the teleutospore and those pro- 
duced from a promycelial spore. These developments go 
on until the nahrlésung becomes exhausted, when the pro- 
mycelial spores and sporophores alike give off mycelium- 
like tubes and fuse in various ways. In other -words, 
U. bromivora is characterized by its promycelial spores 
growing into bicellular sporophores, which sprout directly 
into new promycelial spores. True yeast-cell colonies do 
not occur. 
In the teleutospores of this species which Mr. Soppitt 
sent me I found that promycelia were freely produced in 
water, and that they developed elongate, elliptical promy- 
celial spores (10—-I12 X 3—4y), which tended to become 
vacuolate after they had fallen off, and afterwards emitted 
pointed germ-tubes. I found that teleutospores gathered 
in June germinated freely in September. 
U. olivacea (D.C.)—The teleutospores germinate,* after 
a few hours in water, very much like those of U. Jongzssima. 
The promycelium is, however, so curtailed as practically 
not to exist, and the promycelial spores are really produced 
at once out of the teleutospores without any promycelium, 
These promycelial spores are variable in size; each is sub- 
fusiform, and measures from 5 to 20ou in length, and from 
2 to 3u in breadth. In nahrlésung they form yeast- 
colonies. 
U. major, Schréter—I gathered some specimens of this 
fungus near Paris in the middle of October, 1887. The 
spores germinated very readily when placed in water. In 
twenty-four hours they had developed cylindrico-fusiform 
promycelia (10—12 X 2), which fell off from the teleuto- 
spores (Plate VII. Figs. 19—22) much after the manner 
of U. longisstma. In forty hours these had attained a 
* Brefeld, Joc. cit., pp. 129-133, t. x. figs. 9-26, 
