!66 THE NURSERY-HOOK. 



with a good moist heat, they will quickly form fine speci- 

 mens. (Fig. 53.) 

 Colletia. Rhamnece. 



Increased by cuttings of half-ripened wood, six to eight 

 inches in length, in a cool greenhouse. 

 Collinsonia. Labiatce. 



Increased readily by dividing roots in spring ; also seeds. 

 Colocasia. See Caladium. 

 Columbine. See Aquilegia. 

 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. 



Comesperma. Poly gale ce. 



Seeds. Propagated by young cuttings, which root freely if 

 planted in sand under glass. 

 Comfrey. See Symphytum. 

 Commelina. Commelinactce. 



Increased by seeds. By cuttings, which will root in sand, 

 in a gentle hot-bed. 



Comocladia (Maiden Plum). Anacardiacece. 



Seeds. Propagated by ripened cuttings, which will root 

 in sand if placed under glass, in heat. 



Comparettia. Or chide ce. 



Increased by division of the plants. (See under Orchids, ) 

 Comptonia (Sweet Fern). Myricacece. 



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

 should be put down in autumn. 



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. 17), 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. 



