102 GARDEN FLOWERS. 



1 798. C. rosmariiiifoluun (rosemary-leaved) ; hardy perennial ; 

 18 inches ; flowers rose-red, in June ; Europe ; 1800. 



Cham^rhodos. [Rosaceae.] Hardy herbaceous peren- 

 nials. Sandy loam; dry, cold situation. Increased by seeds. 



C. grandiflora (large-flowered) ; hardy perennial ; 6 inches ; 

 flowers yellow, in June ; Dahuria ; 1828. C. polygyna (many- 

 pistilled) ; hardy perennial ; 6 inches ; flowers yellow, in June ; 

 Siberia ; 1824. 



Cheiranthus. Wall-flower. [Cruciferae.] Half-hardy 

 perennials, of somewhat shrubby habit. C. C/ieiri, the 

 well known common Wall-flower, has produced various hand- 

 some double-flowered varieties, of which the best are the 

 bright yellow, dark brown, and purple. The common single 

 kind bears its yellow or brownish blossoms freely in June, 

 on plants raised from seeds sown in May of the previous 

 year. The seeds should be sown in a bed of light or rather 

 sandy soil, and the plants pricked out, when large enough, 

 into a frame, from whence they may be transplanted, with 

 compact balls of earth about their roots, in the early part of 

 the next May, into the places wdiere they are to flower. 

 When the plants live over to a second year, they are larger ; 

 but, in general, the one-year-old plants are preferable. The 

 double varieties are increased by cuttings, planted under a 

 hand-glass in sandy earth about May or June ; and are best 

 potted, and protected through the winter in cold frames, 

 though sometimes established plants will survive the winter, 

 if exposed. The other species furnish beautiful dwarf 

 plants, suitable for rock-work, or small beds, or the front 

 parts of borders. They are quite hardy, and are increased 

 by cuttings. C. mutabilis is a tall, rather straggling shrub, 

 which has changeable purplish single flowers, and requires 

 the protection of a frame or cool greenhouse. 



C. alpiiius (Alpine) ; hardy perennial ; 9 inches ; flowers yei* 



