106 BRECK'S BOOK OF FLOWERS. 



CONVOLVULUS. 



Morning Glory. 



Convolvulus, from convolvere, to entwine. This is an 

 extensive genus, of much beauty. The sweet potato belongs 

 to this family. Nearly all are climbers. 



Convolvulus panduratus. Virginian Convolvulus. This is 

 a beautiful perennial, from Virginia, with large, white flowers 

 and purple centre ; grows twelve feet high, flowering from 

 June to September. A variety has double flowers ; roots 

 tuberous. 



Convolvulus arvensis. Small White Convolvulus. Hand- 

 some, indigenous, perennial, flowering in June or July ; stem 

 climbing. 



CORONILLA. 



Coronula varia is the only hardy herbaceous perennial with 

 which we are acquainted in the genus. It is worthy a place 

 in the flower-garden, provided it is kept within due bounds. 

 This may be done by digging round the plant, every spring, 

 with a spade, and removing from the ground all its young, 

 creeping roots, which otherwise would be too neighborly with 

 the other plants in its vicinity. Treated in this way, if the 

 soil is not very rich, it will give an immense number of its 

 pretty coronets of purple and white, or pink flowers, in long 

 succession, and they are generally admired. Leaves pinnate ; 

 leaflets numerous, lanceolate, smooth. Stem lax, four feet 

 high, requiring support from wire or light rods. 



COREOPSIS. 



Among the numerous family of Coreopsis, are included a 

 number of showy perennials, with yellow flowers, all perfectly 

 hardy, and easily propagated by division of the roots. 



