THALAMIFLORiE 71 



may be formed of stems, leaves, or parts or roots, 

 and, as here, by the leaf-stalk in Clematis. 



(3) Hook-climbers, which scramble over other 

 plants, with hooks for support, as in the Bedstraw 

 and Bramble. 



(4) Root-climbers that climb by means of adven- 

 titious roots on the stems, e.g. Ivy. 



So sensitive is the underside of the leaf-stalk 

 that it embraces an object in contact within a few 

 hours. 



The stem of the Traveller's Joy is very long, 

 angular, woody, and branched. 



One of the characteristics of this climbing under- 

 shrub is the opposite character of the leaves. These 

 are compound and pinnate, and consist of five 

 leaflets which are distant, heart-shaped to ovate, 

 usually entire or coarsely and unequally toothed. 

 When twining, the leaf-stalk persists, but dies down 

 and falls if not attached. 



There is a sweet scent to the flowers, which are 

 cymose and yellowish, or greenish-white. There are 

 no petals, the sepals serving the purpose, being 

 green externally, yellow within. They are four in 

 number, valvate, and downy both sides. There are 

 many stamens and carpels. 



The fruit is a one-seeded achene, which is hairy, 

 with a long feathery awn formed by the persistent 

 style. The appearance of several of these together 

 suggested the name of Old Man's Beard. 



Flowers of the Traveller's Joy may be found in 



