cys Walking Leaf 
ently only such marginal veinlets are free as would be if it 
actually did so. 
Each of the lateral lobes of the leaf, if at all pronounced, 
contains more or less of a distinct midvein, which starts from the 
starting-point of the basal areole next the leaf’s midrib. These 
midveins are formed by the areole through the centre of each 
lobe gradually straightening in such a way as to form a double 
row of areole, the veinlets that form the side in common of the 
two single rows making up the double one, thickening and con- 
stituting a midvein. 
