COLUTEA CORDIA. 215 



Colutea (Bladder Senna). Leguminosce. 



Propagated by seeds, or by cuttings placed in sandy soil 

 in the autumn. 



Combretum. Combretacece. 



Increased by cuttings of side shoots, taken off with a 

 heel, planted in sand under glass, and placed in heat. 

 Seeds, if obtainable. 



Comfrey. See Symphytum. 

 Commelina. Commelinactig, 



Increased by seeds. By cuttings, which will root in 

 sand, in a gentle hotbed. 



Comparettia. Orchidacece. 



Increased by division of the plants. (See under 

 Orchids. 1 



Comptonia (Myrica asplenifolia, Sweet Fern). Myricacece. 

 Seeds ; by dividing the clumps, and by layers, which 

 should be put down in autumn. 



Conifers. See the various genera, as Abies, Picea, Larix, 

 Cedrus, Retinospora, Thuya, Juniperus, etc. 



Conocarpus ( Button-tree ) . Combretacece. 



Seeds. Increased by cuttings of firm shoots, taken in 

 April, in bottom heat. 



Convallaria (Lily-of-the- Valley). Liliacece. 



Increased by "crowns" or "pips" (see Fig. 26), which 

 are the separated growing points of the roots, possessing 

 a strong bud. These crowns can be obtained from any 

 well established bed in the fall, but they are usually 

 imported. 



Convolvulus (Bindweed). Convolvulacece. 



Seeds of the hardy annuals should be sown in spring in 

 the open border. The hardy perennials may be increased 

 by seeds sown in spring, by division of the roots, and by 

 young cuttings. 



Coptis. Ranunculacece , 



Propagated by seeds and division of the roots. 

 Cordia. Borraginacece. 



Seeds. Increased by cuttings, green or ripe, which 

 strike root readily in sand, in heat. 



