HARDY PERENNIAL PLANTS 183 



giving the plant a whitish appearance all the year round. It stands 

 our hot Summers better even than the well-known C. lomentosum 

 (Snow-in-Summer). This is a species with smaller and lighter 

 colored foliage. Both are used for edging in beds or borders. 



Propagation. The plants may be divided very early in the 

 season with or without roots and replanted with long stems, deep 

 in the soil, well firmed, and kept moist until they begin to grow. 



CHAM^BATIA. C. foliolosa is one of the plants which grow 

 luxuriantly in the Sierras. Myriads of fine plants can be seen from 

 the railway train. It is possibly the most beautiful of all the sub- 

 alpine plants in cultivation. The leaves are very much divided, a 

 bright green and the ilowers are white. If ripe seeds were available, 

 the plants might be more commonly seen than they now are. 



Propagation. It is considered one of the choicest of the very 

 dwarf shrubs in European gardens and tests the ability of the ex- 

 pert propagator to increase it. It can only be handled successfully 

 by notching the stems and allowing the cut surfaces to callus before 

 putting in the cuttings, but the plants used to be so rare in Europe 

 that the above method was seldom attempted. 



CHEIRANTHUS (Wallflower). The species C. Ckeiri is a 

 plant much grown in Europe, where the climate is very favorable 

 to its perfect development. In the warmer parts of America its 

 period of blooming is but a short one. In England it is a common 

 plant on walls. The colors of the flowers are yellow, and reddish 

 brown. Although a woody perennial, it should be renewed from 

 seed, as the plants begin to fail after having bloomed one or two 

 years. There are many fine double forms, some of which have 

 varietal names. 



Propagation. The seeds are sown in April, and as soon as 

 large enough the seedlings are planted out where they are to flower 

 the following Spring. Double flowering kinds can be raised from 

 seed. 



CHELIDONIUM (Double Celandine). The C. majus flore 

 plena is a reliable plant for half-shaded positions in woods. The 

 double form is smaller growing than the single-flowered plant. The 

 foliage of both has a bright green appearance for the greater part 

 of the Summer. It is especially at home among damp rocks, grow- 

 ing in vegetable humus. 



Propagation. In favorable positions it will reproduce itself 

 from seeds. 



