Colquhounia 



( 232 ) 



Comfrey 



Bordeaux Mixture would be equally efficacious. 

 Lygum Solani, a beetle which attacks Potatoes 

 in tiiis country, is quite a different insect. 



COLQUHOUNIA. 



Elegant evergreen climbing shrubs (ord. Labi- 

 atse), suitable for pillars or the roof of a cool 

 conservatory. There are three or four species. 

 They may be increased by tips of the .young, grow- 

 ing shoots in a light, gritty soil, under a hand- 

 glass, in summer. Soil, loam, leaf mould, and sand 

 in equal proportions. 



Principal Species : 



coccinea, Sep., sc. (nyii. vestita, a very woolly 

 tomeiitosa) . form. 



COLUBRINA. 



An obscure genus (ord. Rhamnea;) of stove or 

 greenhouse shrubs. They are of little value decora- 

 lively or economically, and hence are rarely to be 

 seen in gardens. They may be propagated by 

 cuttings, and like a soil chiefly composed of loam. 



COLUMBINE (see AQUILEGIA). 



COLUMELLIA. 



Three species only represent this genus (ord. Col- 

 umelliacese). Oblonga, 20', greenhouse, yellow, 

 requires a mixture of loam, peat, and leaf mould, 

 with a little coarse grit. It may be propagated by 

 cuttings of the semi-mature shoots dibbled in sandy 

 soil under a hand-glass in gentle heat in spring. 



COLUMNEA. 



A genus of pretty stove evergreens (ord. Gesner- 

 aceas). A few are climbers. Aurantiaca makes a 

 nice basket plant, and does well if attached to a 

 block of wood and frequently dipped. The rotten 

 wood acts like a sponge, and holds a considerable 

 quantity of water. Equal parts of peat and loam, 

 with sand, form a suitable compost for the other 

 species. (For general culture, see yEscHYNANTHUS.) 



Principal Species : 

 aurautiaca, Je., or. A kalbrcyerin.ua, Feb., yel., 



handsome basket plant. striped red. A sub- 



aureoniteus, Sep., deep climbing shr. with 



or. red. fleshy stems. 



erythrophiEa, 2', Nov., 



red ; large. 



Other Species: 



hirsuta, Aug., Nov., pur., scaudens, Aug.,sc.; climb- 

 pale red. ing 8 hr. 

 rutilans, Aug., Sep., red schiecleana, Je., yel., br. ; 



yel. ; climbing shr. herbaceous cl 



COLURIA. 



Hardy herbaceous perennials (ord. Rosacea;), 

 resembling the Potentilla. They are propagated 

 by division in spring, or immediately after flower- 

 ing, or by seeds in spring. The only species in 

 cultivation is potentilloides, 1', June, orange yellow 

 (syns. geoides and Dryas geoides). Common soil. 



COLUTEA. (BLADDER SENNA.) 



Ornamental shrubs (ord. Leguminosse), hardy 

 and deciduous, very useful for growing on poor, 

 dry soil. They are also valued for their yellow 

 flowers and the inflated seed pods which succeed 

 them. They are easily raised from seeds sown in 

 spring, or by cuttings inserted in sandy soil. Any 

 common soil. 



Principal Species : 



arborescens,10,Je,Aug., crueuta, 6', Jy., red yel. 

 yel. Said to exist on A pretty shr. 



the crater of Vesuvius. 



Colt's Foot (see Tussilago). 



melanocalyx, 8', Je., 

 Aug., yel. ; a var. of 

 arborescens. 



Other Species : 



annena. 



halepica (see istria). 

 istria, li', Je., yeh 

 media, 6', Jy., or. 



COLVILLEA. 



A genus (ord. Leguminoste) of one species. It 

 is a showy tree, but despite its beauty is seldom 

 cultivated. It may be increased by cuttings of 

 the ripened shoots dibbled in sand in a close frame 

 possessing bottom heat ; also by seeds. Soil, two- 

 thirds loam, one-third leaf soil, and sand. 



Only Species : 



racemosa, 40' to 50', Ap., My., st, sc. 



COMACLINIUM. 



The plant called Comaclinium aurantiacum is 



resembling those of an African Marigold. Common 

 soil. Seeds in spring, cuttings, or division. (Another 

 syn. is Clomenocoma montuna.) 



COMBRETUM. 



Tall, evergreen stove climbers (ord. Combretace), 

 with the exception of two shrubs, and producing 

 scarlet, red, or white flowers in spikes, racemes, or 

 panicles. Propagated by short side shoots taken 

 off with a heel of the old wood, in sand, under a 

 bell-glass or in a propagating case. Loam and peat 

 in equal proportions suit, with sand to make the 

 soil porous. Most of them do best planted out in 

 well-drained borders and allowed to climb to the 

 roof of tall houses. Winter temperature, 50 to 

 G0 ; summer, (K) to 90. 



Principal Species : 

 coccineum, 20', Sep., sc. latifolium, My., sc. (KI/II. 



(see p. 233) (xyit. Poivrea Poivreii ma'crophylla) . 



coccinea). pincianum. My;, pur. ,red. 



elegaus, 15', My., sc. purpureum, 20' to 40', 



graudiflorum, 5', Mv.,sc. ; Sep.. sc. 



shr. (syns. Af/elii and 



Poivrea Afxelii). 



Other Species : 



Afzelii (wrgrandiflorum). intermedium (see como- 



barbatum, 10', wh. sum). 



comosum, 20', sc. (*;/. nauum, 2', wh. ; shr. 



intermedium). paniculatum, oO', Sep., sc. 



decaudrum, wb. (//. pilosum (syn. Poivrea 



Poivrea decandra). pilosa). 



fariuosum,]0',My.,or.red. racemosiim, 12', My., wh. 



formosum, Mch. , yel. red. sundaicum. 



COMESPERMA. 



Small evergreen shrubs (ord. Polygalefe). Prop- 

 agated by cuttings of the side shoots under a 

 bell-glass in early summer. Peat, fibrous loam, and 

 sand. Winter temperature, 40 to 45 ; summer, 

 55 to 75. 



Principal Species: 

 coridifolium (sec erici- virgatum, Mv., pur. 



num). volubile, 3', Ap., bl. (syn. 



ericiuum, 3', Je., pur. gracile). 



gracile (see volubile). 



COMFREY. 



Comfrey (Symphytum officinale) is a native 

 plant found plentifully beside ditches and watery 



Colysis (see Polypodium). 

 Cumaropsls (see Ihibus and Waldsteiiila). 

 Comarostapliylis (nee Arctostaphylos). 

 Comarum (see Potentilla). 



