Vegetative key to the families

TENDRILS present on stem or leaves; plants climbing or decumbent

Tendrils on the stem (modified leaves or branches), or on the petiole (modified stipules)

Tendrils on the vegetative stem, or on the peduncles

Either; leaves compound with 5 leaflets; or, leaves simple

Tendrils opposite leaves Vitaceae

Leaves pedately 5-foliolate (i.e. the leaves divided into 3, the 2 lateral leaflets divided into 2). Weak climber with herbaceous branches Cayratia

Leaves simple or digitately 3–5-foliolate