42 British Uvedinee and Ustilaginea. 
like Puccinia spores, but have, in the European species, 
generally two germ-pores in each cell, and these are placed 
eel ON er; 
\2 
U) 
see 
Ce) 
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vee 
A 
ey 
One 
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Fig. 3.—Chrysomyxa rhododendri. Section of spore-bed showing the compound teleu- 
From appet Coraey of ieamsperioe comsiavinisde Tagaebt gic tier mice uean erin bee 
(be Bas e, The epidermal cells of the host-plant (2. Azrsutum); w, mycelial hyphe. 
at that end of the cell which is nearest the septum (Plate III. 
Figs, 22, 23; and Plate IV. Figs: 11, 13, and 14). 
Germination.—The period at which germination takes 
place in teleutospores is subject to variation with the 
different species of Uredines. In the greater number of 
cases this process ensues only after the teleutospore has 
remained for some considerable time in a state of qui- 
escence or rest. Generally this resting period extends from 
the summer or autumn of one year until the ensuing spring, 
corresponding, in fact, with the conditions of the host-plant, 
which of course, in the case of deciduous plants, is without 
suitable foliage during the winter months into which the 
fungus can gain an entrance. On the other hand, there are 
several species in which teleutospores germinate as soon as 
they are mature, without undergoing any resting period 
(Leptopuccinia, Lepturomyces); while there are others 
which have only a very short resting period (P. rubigo- 
