SELECTION OF PLANTS. 177 



in which case it will be easy to increase it, but there is a 

 great difficulty of making it strike from layers. 



It flowers in March and April, and is a native of North- 

 west America. 



551. SALVIA FOLIOSA. Leafy Mexican Sage. 



Class 2nd. Diandria Monogynia. 



It is a hardy Annual, flowering in August and Septem- 

 ber, and readily propagated by seeds. 



It is a native of Mexico, and may be seen in the garden 

 of the Horticultural Society. 



552. CHEIRANTHUS MUTABILIS. Changeable Wall-flower. 



Class loth. Tetradynamia Siliquosa. 



A beautiful half-shrubby plant, that flowers in April. 

 The changeableness in colour of the petals is most re- 

 markable ; at first they appear with pale lilac, and then 

 gradually after to purple, so that many tints are present at 

 the same time upon one raceme. 



It requires the protection of a greenhouse in winter, 

 and may be propagated by cuttings of the young wood, 

 struck in heat, under a bell-glass. 



It is a native of Teneriffe. 



553. ROSE CLARE. 



Class 12th. Icosandria Polygynia. 



The great beauty of the variety consists in its constant 

 flowering, and the deep rich crimson of its petals ; besides 

 which its foliage is of a rich deep green, and not more 

 affected by cold than that of the common China rose, 

 It is an evergreen, and strikes freely from cuttings, 

 i 2 



