256 MR. В. $. ADAMSON ON THE COMPARATIVE ANATOMY 
V. linifolia, Hook. f. 
Leaves very small, narrow, glabrous and thick. Stomata are more numerous 
on the upper side. "There is a sharp differentiation into palisade and spongy 
tissues. The small bundles are embedded ; the central one ends in a normal 
hydathode. Starch is found in large quantities in the mesophyll cells, an 
exceptional feature among the species examined. 
V. vernicosa, Hook. f. 
The leaves are small and glabrous, but much larger than in V. linifolig 
The outer walls of the epidermal cells are not much thickened. Stomata 
Fie. 8. 
Transverse section of leaf of V. ignota. х 200. 
occur on both sides. There is a regular layer of palisade-tissue that passes 
gradually into the spongy tissue ; the bundles are transcurrent. The 
herbariumimaterial agrees in all points with this description. 
V. anomala, Armst. *, 
This is very like V. vernicosa, but smaller in all ways. Тһе cuticularization 
* Bot. Mag. t. 7360. 
