DESCRIPTIVE LIST OF THE BEST KINDS 213 



which belong to the natural order Cruciferae, are charming 

 April flowering plants for the sunny rockery. A hand- 

 some one, though usually only a biennial, is C. Allioni, 

 about twelve inches high, bearing yellow flowers. It 

 likes a dry, sunny spot ; if the growths are cut back 

 after the flowers are over its life may be prolonged. 

 C. alpinus, however, is the most generally useful* It 

 has small leaves, and is of rather trailing habit, having 

 beautiful clear yellow flowers. It is a perennial, lasting 

 for years in a dry place. C. Marshall! is a hybrid plant, 

 and does not seed. It is about a foot or so high, and 

 has orange-yellow flowers. C. variabilis and C. muta- 

 bilis have blooms of varying shades. The plants are 

 often confused, but the true C. variabilis is more of a 

 trailer. The blooms change from red-brown to purple. 

 All these may be raised from cuttings taken off with a 

 " heel " of old wood just after flowering, and placed 

 beneath a bell glass. C. alpinus, C. Allioni, and C. varia- 

 bilis are raised from seeds. All may be kept compact 

 by cutting back after flowering. 



Chrysanthemum (Marguerite, Ox-eye Daisy). Most 

 of these are border plants (natural order Compositae), 

 although a few are well adapted for the rock garden, 

 and worth growing for their free-flowering qualities. 

 C. alpinum, the Marguerite of the Alps, found in all the 

 stony pastures, flowering soon after the snow has melted, 

 is a charming little plant, only two or three inches high, 

 with small leaves and large pure white flowers. It can 

 be grown in a half-shady position in gritty soil where 



