86 TENDRIL-BEARERS, Cuap. III. 
BienontacE#.—This family contains many tendril- 
bearers, some twiners, and some root-climbers. The 
tendrils always consist of modified leaves. Nine species 
of Bignonia, selected by hazard, are here described, 
in order to show what diversity of structure and 
action there may be within the same genus, and to 
show what remarkable powers some tendrils possess. 
The species, taken together, afford connecting links 
Fig. 5. 
Bignonia. 
Unnamed species from Kew. 
between twiners, leaf-climbers, tendril-bearers, and root- 
climbers. : 
Bignonia (an unnamed species from Kew, closely 
allied to B. ungués, but with smaller and rather broader 
~ leaves).—A young shoot from a cut-down plant made 
three revolutions against the sun, at an average rate of 
2hrs.6m. The stem is thin and flexible; it twined 
round a slender vertical stick, ascending from left to 
right, as perfectly and as regularly as any true twining- 
plant. When thus ascending, it makés no use of its 
tendrils or petioles; but when it twined round a 
