254 Composite—Chrysanthemum. 
ray. The disk is large and the ray-florets relatively short. It 
is a native of the Caucasus. The garden varieties are either 
Fig. 141. Chrysanthemum roseum. (} nat. size.) Fig. 142, Ch. coronarium. (} nat, size.) 
single or double, with the florets plain or fringed, white, salmon, 
pink, rose, crimson, or purple of some shade, or two-coloured. 
They begin to bloom in May and continue for a long period. 
4. Ch. Tchihatchéwu.—This species is unfortunate in its 
name, but said to be useful for covering banks. It is a trail- 
ing perennial with small bipinnatifid glabrous dark green 
leaves toothed at the base of the petiole and small white 
flowers. 
5. Ch. coronarium (fig. 142).—A branching annual from 2 
to 3 feet high bearing a profusion of single or double yellow 
