TO THE FLOWER GARDEN. 67 



is the best for a small greenhouse, as it blooms very freely, 

 and never gets to a large size. There are numerous varieties 

 of the various kinds of Orange. The following are popular : — 

 C. aurantium, C. decumana, C limetta, C. limonum, C. Medica, 

 C. nohU'is, and C. vulgaris. 



CLADANTHUS. [Compositse.] A small genus, con- 

 taining one pretty hardy annual, C. Arabicus, which should be 

 sown in the open border in March, and again in April ; or, 

 to have earlier-blooming plants, it may be sown in frames in 

 the former month. 



CLARKIA. [Onagraceae.] Showy free-flowering annuals : 

 the flowers are of a singular form, like a fanciful cross. They 

 are sown in the open border with other annuals in April, or 

 in pots in February, to be ready to turn out in May almost 

 in a flowering state : half a clozen plants in a patch are 

 enough. The common soil of the garden, not very rich, is 

 best for them ; for the less luxuriant the foliage grows, the 

 better the plant looks, although it is then smaller. Those 

 sown in pots must be placed in a frame, and thinned so that 

 not more than half a dozen should be left growing in the 

 pot : in May they may be turned out into the borders, 

 without disturbing the balls of earth. The plants bloom 

 from May onwards, according to the time of sowing. 



CLAYTONIA. [Portulaceae.] Hardy annuals and 

 tuberous-rooted perennials, not very showy. Common soil. 

 Increased by seeds or by division. 



CLEMATIS. Virgin's Bower. [Ranunculaceae.] A 

 large genus of climbing shrubs, some of which are very orna- 

 mental. The hardy kinds are of the simplest culture ; they 

 are raised from seeds or layers, and grow freely in any mode- 

 rately good ground. They are valuable for covering walls, 

 arbours, trellis-work, &c. The half-hardy kinds are proper 

 for the pillars and rafters of greenhouses and cool conserva- 

 tories. The stove species are of little importance. C. Sie- 

 boldil, C. ccBTidea, C. graveolens, and C. Heiidersonii, are 

 worthy of being grown on a large pot trellis, and are manage- 

 able in that form. The genus contains some hardy perennials, 

 which are managed like other herbaceous perennials. The 

 principal varieties are C. ccerulea, bluish lilac ; C. flammula, 

 C. lanuginosa, and C. montana. 



