HERBACEOUS PERENNIAL VINES 95 
the ground-nut (Apios tuberosa), but it must be 
restricted as to root space or it will become 
weedy. This, too, is an oddity, as it is the only 
climber, except the akebia, that has flowers of 
a brownish colour. Although small, the fragrant 
blooms are freely produced. This vine would 
look well in a rockery, but must not be used in 
mixed plantings, as it runs rampant and will 
smother out choice plants. Give it a good, sunny 
location and plenty of water and it willtattain a 
height of eight to ten feet. The tubers are hardy 
in this latitude (Long Island) and are edible. 
In Europe, a popular foliage plant for covering 
old hedges and screens, but seldom seen in this 
country, is the bryony (Bryonia dioica). It has 
little to induce its being used except quick growth. 
It blooms, but the flowers are insignificant, being 
greenish-white. The plant, though hardy in Eng- 
land, requires a little mulching in this climate. 
It is not easy to find plants that will do well 
in sandy places. Such plants should have great 
drought-resisting qualities and these are seldom 
met with. But there is one species of vines which 
will do well in sandy, waste places and flower 
continually through the summer. That is the 
convolvulus family. The best member is the 
California rose (C. Japonicus), which, climbing 
