Campylanthus 



( 107 ) 



Canker 



CAMPYLANTHUS. 



Thrso arc greenhouse- evergreen shrubs (nrd. 

 Scrophnlarine;v) that flourish in sandy loam and 

 peat. Cuttings of the half-ripened growths root 

 readily if inserted in very sandy soil beneath a 

 bell-glass. 



Principal Species : 



salsolm'di/s, 1', Alch., pur. 



CANANGA. 



Tropical trees, mostly tall (nrd. Anonacese), from 

 Java and India. They will grow in a stove in peat 

 and loam. 



Principal Species : 



niouospermn. odorata, drooping yel. 



flowers. 



CANARINA. 



These are attractive winter flowering greenhouse 

 herbaceous perennials (prd. Campanulaceae) that 

 appreciate a rather warmer temperature when 

 growth is commencing. The best compost, con- 

 sists of fibrous loam and peat with some coarse 

 sand. Propagation is easily effected by division in 

 spring, but cuttings may be rooted if great care is 

 taken. 



Principal Species : 

 campanulutn, 4'. Jan.. or. kcvigata (we campan- 



(///(. C. Campanula). ulata). 



CANARIUM. 



The members of this genus (nrd. Burseraceie) are 

 all tall East Indian trees of economic value. The 

 fruits of commune are eaten, and they also furnish 

 a useful oil for lighting purposes. Other species 

 yield a commercial resin known as Elemi. The 

 species are seldom found in cultivation, but they 

 may be accommodated in a stove in a compost of 

 peat, loam, and sand, and are propagated by 

 cuttings. 



Principal Species : 

 commune, 40', ant., wh. strictuni,30', aut., grn.,wh. 



CANARY CREEPER. 



This is one of our most popular half-hardy 

 climbers (prd. Geraniacerc). Plants raised from 

 seeds sown under glass in spring grow rapidly 

 when put out after all danger of frost is gone, and 

 attain to a height of 10' or 12', when they will 

 be smothered with the canary-coloured flowers 

 from which the plant derives its popular name. It 

 has the additional merit of thriving in towns if 

 given a well-drained, sunny site and fertile soil. 

 Strictly speaking, it is a perennial, but is best 

 grown as an annual. The botanical name is 

 Tropseolum canariense. 



CANAVALIA. 



This genus (prd. Leguminosse) is mainly com- 

 posed of stove evergreen twiners, but they are not 

 possessed of much horticultural value. They grow 

 well in a mixture of sandy loam and leaf mould, 

 and may be propagated from cuttings in sandy soil 

 under a bell-glass in bottom heat. 



Principal Species : 



ensiformis, 6', Je., Jy., 

 red pur. (tyn. glaoiata). 

 Other Species : 



bonarieusis, 10', Jy., pur. 



obtusifolia, 6', Jy., Aug., 

 pur. 



rosea (tee obtusifolia). 



Campijlobotrys (see Jfnjfmannia). 



Canary Grass (see Plialaris). 



Canary Seed (see Phalaris canariensis). 



CANBYA. 



A perennial plant (prd. Papaveraceae) needing 

 the shelter of a warm greenhouse. It can be raised 

 from seed and grown in light loam. 



Only Species : 



Candida, li", Jy., wh. 



CANDOLLEA. 



This genus of evergreen shrubs (orA. Dilleniaceae) 

 was named in honour of the eminent botanist, 

 De Candolle. They require greenhouse treatment, 

 and a mixture of loam and peat in equal parts, 

 with coarse sand. Propagation is readily effected 

 by cuttings in sanely soil beneath a glass. 



Principal Species : 



cuneiformis, 6', Jy., yel. tetrandra, 6', Je., yel. 

 Hnegelii, 6', Je., yel. (syn. calycina). 



CANDYTUFT. (IBEBIS.) 



Both annual and herbaceous plants arc included 

 in the genus (see Iberis, ord. Cruciferaj), but there 

 is a special interest in the many pretty annual 

 garden varieties, obtained mostly from umbellata 

 and coronaria. They are quite hardy, robust, not 

 exacting as regards soil, and should be sown in 

 March and April, in masses where they are in- 

 tended to flower. In distinct or mixed colours 

 they are most effective in the summer, and useful 

 for cut flowers. There are tall and dwarf varieties, 

 the former growing about 1' high, and the latter 6". 



Varieties : 



Candytufts are offered in mixed or distinct 

 colours. White Spiral is a fine var., producing 

 large spikes of flowers. White Rocket also bears 

 fine flowers. Other colours are car., crim., pk., and 

 lil. A few vars. are sweet. 



CANELLA. 



These are stove evergreen trees (ord. Canellaceae), 

 and have some economic value. A white oil is 

 distilled from the aromatic bark. They thrive 

 best in loam, peat, and coarse sand, and may be 

 increased by cuttings of ripe wood under a bell- 

 glass in bottom heat. 



Only Species : 

 alba, 40', Je., wh. laurifolia (see alba). 



CANKER. 



The term canker is very comprehensive, and is 

 applied to fungoid diseases which affect various 

 species of plants and in many cases are accom- 

 panied by different symptoms. The ill effects of 

 canker are felt the most amongst fruit trees, par- 

 ticularly the genus Pyrus, and here the term is 

 somewhat loosely applied, various unhealthy con- 

 ditions of trees being attributed to canker. The 

 true disease, however, is caused by a distinct 

 fungoid growth known as Nectria ditissima, which 

 affects young and old Apple trees under certain 

 conditions, and also Pears, though less frequently. 

 In these cases the wounds caused by canker 

 are quite dry, but with trees possessing gummy 

 constituents they almost invariably discharge. 

 On Apples and Pears the first trace of the 

 disease is cracking of the bark, followed by 

 distorted swellings and, eventually, gaping wounds, 

 which extend round the branch or stem, and 



Candletcrry Tree (see A leurites). 

 Candle Tree (see Parmentiera). 

 Cane Uralte (see Arundinaria). 

 Canittnim (see *Kc/imea). 



