CLIMBERS. 



^y. 



Leaves opposite. 

 28. Leaves simple. 28. 

 Leaves compound. 32. 



Simple. 



. Scrambling : pith chambered. Forsythia. 



Climbing by the leaf-stalks. Clematis. 



Climbing by aerial roots. 30. 

 Twining. 31. 



30. Leaves nearly entire. Decumaria. 

 Leaves distinctly serrate. Hydrangea. 

 Leaves distinctly dentate. Schizophragma. 



31. Sap not milky : pith excavated. Lonicera. 

 Sap milky : pith continuous. Periploca. 



Compound. 



32. Twining or scrambling. 33. 



With tendrils or climbing roots. 34. 



33. Twigs 4-lined : scrambling. Forsythia. 

 Twigs rounded : twining. Jasminum. 



34. Climbing by aerial roots. Campsis. 

 Climbing by tendrils. 35. 



35. Tendrils ending the leaves. Bignonia. 

 The leafstalks prehensile and coiling. Clematis. 



