Cuar. III. COMPOSITA, 117 
Brazil there is another species which is a leaf-climber, 
Mutisia is the only genus in the family, as far as 
I can learn, which bears tendrils: it is therefore 
interesting to find that these, though rather less 
metamorphosed front their primordial foliar condition 
than are most other tendrils, yet display all the 
ordinary characteristic movements, both those that 
are spontaneous and those which are excited by con- 
tact. 
The long leaf bears seven or eight alternate leaflets, 
and terminates in a tendril which, in a plant of con- 
siderable size, was 5 inches in length. It consists 
generally of three branches; and these, although 
much elongated, evidently represent the petioles and 
midribs of three leaflets; for they closely resemble 
the same parts in an ordinary leaf, in being rectangular 
on the upper surface, furrowed, and edged with green. 
Moreover, the green edging of the tendrils of young 
plants sometimes expands into a narrow lamina or 
blade. Each branch is curved a little downwards, and 
is slightly hooked at the extremity. 
A young upper internode revolved, judging from 
three revolutions, at an average rate of 1 hr. 88 m.; it 
swept ellipses with the longer axes directed at right 
angles to one another; but the plant, apparently, 
cannot twine. The petioles and the tendrils are both 
in constant movement. But their movement is slower 
and much less regularly elliptical than that of the 
internodes. They appear to be much affected by the 
light, for the whole leaf usually sinks down during the 
