ciently hardy to be recommended for planting around New 
York [8E]. 
C. praecox (Meratia p.). China. 
CHIOGENES, Ericaceae. A low mat-forming evergreen suited 
for the rockery [5E]. 
C. hispidula. Creeping Snowberry; N. Amer. 
CHIONANTHUS, Oleaceae. Fringe-tree. Attractive large 
shrubs or small trees that bear a profusion of lace-like flowers in 
the spring. C. retusus is the more tree-like and with us produces 
flowers earlier than C. virginicus. These are among the best of 
recommended small flowering trees [6H]. 
C. retusus. China, Korea, Japan (My.). 
C. virginicus. N. J. to Fla. and Tex. (My. or Jn.). 
C. v. maritimus. 
CHRYSANTHEMUM, Compositae. Chrysanthemum. Sub¬ 
shrubs that winter-kill completely in some years. C. nipponi- 
cum produces daisy-like flowers and long narrow fleshy leaves 
feE]. 
C. morifolium gracilis. Hort. origin. (O.). 
C. nipponicum. Japan (S. or O.). 
CISTUS, Cistaceae. Rock-rose. Low evergreen or nearly ever¬ 
green shrubs that succeed best in full sun and well drained soil. 
They are not entirely reliable for this region and must be pro¬ 
tected from cold winds [6B, 5E, 8E, nursery]. 
C. albidus. W. Mediterr. region. 
C. corbariensis (C. salvifolius X populifolius). 
C. laurifolius. Mediterr. region. 
C. salvifolius. Mediterr. region. 
24 
