STOVE AND GREENHOUSE PLANTS. 21 



CENTRADENIA— Of this there are three species, combining handsome 

 foliage and rather pretty flowers. C. grandifolia has the largest leaves, 

 and is the most useful for decorative work. The other species are C. 

 floribunda and C. rosea. Cuttings will root at any time of the year. To 

 get good growth on the plants during Summer they should be started 

 from cuttings in March. An intermediate house suits them; they require 

 but little shade. 



CENTROPOQON— C. Lucyanum is said to be a bi-generic hybrid. The 

 parents are given as Centropogon fastuosum and Siphocampylus betu- 

 laefolius. It is one of the very best stove or warm greenhouse herba- 

 ceous perennials. There is no great difficulty in its cultivation; but it 

 is seldom seen in collections. The flowers are rosy carmine, produced in 

 midwinter. After blooming numerous small shoots will usually appear 

 along the branches; these taken off with a heel root w^ith bottom heat. 

 The young plants will thrive in heat and moisture during the first two 

 or three months; they may afterwards be grown in a frame. After the 

 blooming season is over the old plants may be given a period of rest, 

 and then repotted, using a light, rich material. 



CESTRUM CORYMBOSUn and C. NEWELL! may be used for flower- 

 ing about Christmas, if young plants are started about the end of 

 August, the wood to be taken from old specimens planted out. As soon 

 as rooted put in 3-inch pots, afterward placing three together in a 6- 

 inch pot to bloom. Keep in a sunny house, or the plants are apt to 

 make too much foliage. 



CINERARIA— For coming into flower during March and April sow the 

 seed during September. As soon as large enough the seedfings should 

 be put in 2-inch pots, and from that time on they must not be allowed 

 to get in a pot-bound state. The coolest house, with a maximum 

 amount of light and air, is what they need. Soil should be light and 

 well enriched. 



CONVOLVULUS— This genus possesses many weedy plants which, 

 when once they gain a foothold in the garden, are difficult to eradicate. 

 Several are very ornamental when in bloom. One of the best, especially 

 for baskets, an evergreen, with short pendulous growths, is named C. 

 mauritanicus. The flowers are blue, and about an inch across. This 

 plant is usually increased by division, or cuttings of the ripe growths 

 early in Spring. Seeds are also offered. 



CORDYLINE— The greenhouse Cordylines, such as C. australis, C. indi- 

 visa and its forms, are best raised from seeds which are easily procura- 

 ble. Sow thinly, as they they will not require to be transferred during 

 the earlier stages of growth. They are good decorative plants, from 

 5-inch pot plants up, having long, narrow strap-shaped drooping leaves. 

 Small plants are useful for mixing with other subjects in vases and bas- 

 kets, as they stand full sun. 



The ornamental leaved kinds, which need a higher temperature for 

 their perfect development, are very numerous. Some of the best known 

 are C. Baptistii, C. Cooperii, C. porphyrophylla, C. Youngii and C. termi- 



