128 
Growing with the passion-flowers, and of similar habit, are 
many plants in the cucumber family, the Cayaponias and Gura- 
g. 
s which produce the two last mentioned 
many of them twining around trunks of trees. To the botanist 
these plants ote as eed a dy Petiape as any other 
d that th 
ndean alliance. ey are the 
relics of a former ee or iagely prevalent group, of which 
most of the members have become extinct. e genera have 
but few surviving are 7 ne now awaiting study severa be 
species of these pla t 
belonging to any genus yet described. The flowers are, ior the 
most part, exceedin, andsome, growing mostly i 
in this group, they rarely bear edible fruits. One species in the 
genus Thibat develops a cluster of tall erect stems, six to ten 
feet in height, ie leaves and me in an la- 
at 
flowers b mbrella: 
shaped cano, e top; its berries, altho oe somewhat 
mawkish, are oe eaten by a nati 
All through tt valleys, but iall 
lower elevations and towa rd and u 
upon the great Bree we have 
h ) 
boneset or thorough-wort. The flowers are mostly white, al- 
though often purplish. 
The Sa lie Asclepiadaceae and Convolvulaceae, all 
contribute large numbers of twining plants of those of 
weed family are almost innumerable. Sometimes two of them, 
