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.