410 EXPLANATION OF PLATES I. AND II. 



No. 6. 



Another palmately-veined leaf differs from the pre- 

 ceding ones in the areola? being concave above or puckered 

 from the tightness of the veins, and in its margin being 

 sharply toothed and irregularly crenated. Only one impres- 

 sion of this leaf exists in the collection, and that is imper- 

 fect, there not being enough of it to indicate the form 

 of the outline. It does not appear, however, to have been 

 lobed. The diameter of the lamina is scarcely two inches. 



No. 7. 



There is still another palmately-veined leaf very dif- 

 ferent in form from any of the others. It is one-third 

 wider than it is long, and seems to have been rounded at 

 the apex, which is, however, narrower than the widely 

 rounded sides. The base is cut horizontally, and is very 

 entire. The sides are tooth-crenated, the teeth being seg- 

 ments of circles, and the crenatures acute, but not deep. 

 The footstalk is slender, and the primary veins, none of 

 which are straight, are still more so. They spring five 

 together from the footstalk ; the lower pair being smaller 

 than the other three, and the mid-rib largest. They are 

 all branched, and the ultimate reticulations are polygons 

 of very irregular shape. The areola? are smooth and flat. 

 The length of this leaf is rather more than an inch. 



No. 8. 



The fourth palmate leaf, of which there is a definite im- 

 pression, is sub rotund, and about an inch and a half long, 

 with a very entire, or at the most slightly undulated, mar- 

 gin. More than an inch of slender footstalk remains. The 

 base is horizontal, Avith a minute curvature downwards, or 

 decurrence where it joins the footstalk, then it is widely 



