EUST3. 119 



according to M. Tiilasne and his disciples. When 

 fresh, it is reputed to exhale a faint odour, as of the 

 primrose. During the winter and spring months 

 the wedge-like spores of the second crop are 

 matured on the fallen leaves (plate IX. figs. 189, 

 190), and these are capable of a speedy germina- 

 tion, and the production of secondary reproductive 

 bodies, as in the willow rust above alluded to. 



Probably, also, the similar rust on the poplar 

 (plate IX. figs. 195, 196), or on the aspen, may be 

 met with under like conditions ; i.e., the summer 

 spores, which are yellow and spherical, on the living 

 leaves, and the brown permanent masses of winter 

 spores on the fallen and decaying leaves. The sole 

 remaining British species is not uncommon on 

 leaves of the common spurge in gardens, and 

 whilst the yellow pulverulent spores occur on the 

 upper, it will not be improbable that black per- 

 manent spots will be found on the lower leaves 

 (plate IX. figs. 193, 194), inclosing closely-packed, 

 rudimentary, elongated or wedge-shaped cellules of 

 the winter spores. 



Any one may make himself acquainted with the 

 genus Coleosporium with but little trouble, which 

 the acquisition will more than compensate. A. 

 summer stroll into any locality in which the com- 

 mon coltsfoot can be found, will be certain to prove 

 sufficient. Let the spot selected, be any station on 

 the North Kent Railway, for those who reside in 

 town, or even a trip to the Crystal Palace and a 



