526 



RESEARCHES ON FUNGI 



The developmental season of the Uredineae is chiefly in the 

 spring and summer and corresponds exactly to the developmental 



Fig. 213. — Teleutospore-sori of Puccinia Malvacearitm on the under side of a 

 Hollyhock leaf {Althaea rosea). Photographed in England. Natural size. 



period of the host-plants. On the other hand, most Hymenomycetes 

 develop best in the autumn at a time when, as Linnaeus expressed 

 it, " Flora is leading her Flowering Plants into winter quarters." 

 This autumnal development is correlated with the fact that the 



