38 
10. 
1 is 
[2. 
CLIMBERS, 
D. SCRAMBLING OR CLIMBING WOODY PLANTS. 
. Evergreen. 2. 
Deciduous. 7. 
. With prickles. 3. 
Unarmed. 4. 
Evergreen Climbers—Armed. 
. Scrambling: leaves pinnate. Rosa. 
With tendrils on the petiole: leaves simple. Smilax. 
Evergreen Climbers—Unarmed. . 
. Leaves alternate, typically lobed: climbing by roots. Hedera. 
Leaves opposite or whorled, not lobed. 5. 
. Climbing by roots: leaves small. Evonymus. 
Climbing by leaf-tendrils. Bignonia. 
Twining. 6, 
. Leaves sessile, the upper united in pairs. Lonicera. 
Leaves stalked, sometimes whorled. Gelsemium. 
. With spines or prickles: scrambling. 8. 
Unarmed. Io. 
Deciduous Climbers—Armed, 
. With detachable prickles: leaves compound. 9. 
With pungent branch spurs: leaves simple. Lycium. 
. Leaves digitate, breaking away above base. Rubus. 
Leaves clearly pinnzte, leaving low leaf-scars. Rosa. 
Deciduous Climbers—Unarmed. 
Leaves alternate. II. 
Leaves opposite. 28. 
Leaves alternate. 
Leaves simple. 12. 
CAuTION.—Leaves compound. 23. 
Twining: without tendrils. 13. 
With tendrils: leaves palmately nerved. 20. 
