9
14
Leaves opposite
15
14
Leaves alternate
42
15
Woody climbers
16
15
Trees or shrubs
17
16
Petals purple
Clematis alpina
(L.) Mill.
16
Petals white
Clematis vitalba L.
17
Leaves clearly lobed
18
17
Leaves not lobed
21
1,2,3,4,5,6,7,8 10,11,12,13,14,15,16,17,18,19,...444