Stove and Greenhouse Plants and Flowers 157 



plants during the winter. As the pots get full of roots, give an occasional 

 stimulant. 



Aphides or Greenfly are sometimes very troublesome, and so are 

 Thrips if the atmosphere is too dry. These can be kept under by vapor- 

 izing with nicotine. For mildew, dust with sulphur, and allow as free 

 a circulation of air as possible. Slugs also must be looked after. A 

 leaf -mining maggot is sometimes very troublesome, but may be checked 

 by early fumigation. [w. T.] 



Cissus. A genus of free-growing stove climbers (now included in the 

 genus Vitis), remarkable for their handsome foliage. C. discolor has 

 velvety -purple leaves marbled with white and shaded with pink, and is 

 perhaps the best known. C. argentea has silvery-grey markings on the 

 leaves; and C. porphyrophyUus has purple -tinted foliage. The plants 

 flourish in a rich loamy soil with a little sand and leaf mould, and are 

 chiefly valuable for covering walls or trellises in a warm moist house. 

 They are propagated by cuttings. 



Clerodendron. A genus of shrubby or twining plants of free growth 

 and ornamental appearance when in blossom. They like a loamy soil 

 and stove treatment, and may be raised from cuttings. The best kinds 

 are: C. fallax, a bushy plant with large spreading leaves and large trusses 

 of bright-scarlet flowers. G. fragrans has white flowers tinted with red. 

 C. Thomsonce (or Balfowri), with twining stems, is a fine species with a 

 profusion of deep-red flowers and pure-white calyces. C. splendens has 

 rich-crimson flowers, and C. speciosum is a hybrid between it and C. 

 Thomsonce. 



Clivia. A genus of South African Amaryllids, still well known as 

 IMANTOPHYLLUMS. They have strong deep -green strap -shaped leaves, 

 and throw up large heads of showy bell-shaped or tubular flowers some- 

 what like those of the Vallota or Scarborough Lily. They are easily 

 grown in a compost of rich fibrous loam, leaf mould or well -rotted 

 manure, and sand, in about equal proportions, and require warm green- 

 house treatment, or, say, a minimum winter temperature of 50 to 60 F. 

 Propagation by dividing the tufts usually takes place in February or 

 March, but stock may be more readily raised from seeds. These should 

 be sown when thoroughly ripe in a temperature of about 70 F., the 

 seedlings being in due course pricked out and grown on in small pots. 

 It takes about three years to attain the flowering stage. The best-known 

 kinds are: C. cyrtanthiflora, beautiful salmon red; C. Gardeni, orange and 

 red; C. miniata, scarlet with a yellow throat; there are, however, many 

 varieties of this species, including a pale creamy-yellow one called citrina. 

 C. nobilis, bright red and yellow. 



Coleus. There are now innumerable garden forms of Coleus, all being 

 derived from C. Blu/mei (fig. 273), a native of Java. Fancy names have 

 been given to many of them, but as new varieties are so easily raised 

 from seed it is practically impossible to keep pace with the variations 

 which occur. The foliage constitutes the most ornamental feature of the 



