FLORA OF THE DAKOTA GEOUP. 79 



craspedodrome even when the borders are not undulate-dentate, and always 

 so when the leaves are undulate. 



Hab. — Clay County, Kansas. //. C. Towner. 



Menispermites populifolius, Lesqx. 



Plate IV, Fig. 4. 

 Hardens ''Ann. Rep.," 1874, p. 337. 



Leaf broadly ovate, obtuse, subcordate or truncate at base, palmately five-nerved 

 from near the basal borders; primary lateral nerves at a more acute angle of diverg- 

 ence, branching on the lower side; secondary nerves equidistant, parallel, all campto- 

 drome. 



The leaf is coriaceous, smooth on the surface, perfectly entire, 5£ 

 centimeters long and as broad in its largest diameter below the middle. 

 The primary lateral veins diverge about equally from each other at an 

 angle of about 30°; the lower is nearly simple and has still a thin marginal 

 veinlet underneath; they branch from the lower part, and the secondary 

 nerves at a distance above fork only at their ends toward the borders. 

 The areas are crossed by very strong nervilles at right angles to the nerves, 

 anastomosing in the middle. The areolation is obsolete. 



Hab. — South of Fort Harker. Chs. Sternberg. 



Menispermites cyclopliyllus, Lesqx. 



Plate XV, Fig. 3. 

 Havden's "Ann. Rep.," 1874, p. 358, pi. vi, fig. 4. 



Leaf thick, subcoriaceous, very entire, nearly round and centrally peltate, deeply 

 concave, palmately five-nerved; inner lateral nerves curving inside, the outer open, 

 nearly at right angles to the medial nerve, all dividing by open straight branches anas- 

 tomosing at a distance from the borders in double rows of arches; basilar veins 8 to 5, 

 diverging star-like from the central point. 



The leaf is 7 centimeters long and 6 broad in its widest diameter; the 

 middle is rounded downward and a little more narrowed upward to the 

 round subtruncate apex. The point of attachment of the petiole is nearly 

 central, and though surrounded by a series of nerves diverging star-like, 

 it has, like the other species of this genus, five primary nerves turning 

 upward, the lower ones representing marginal veins. The leaf is concave 

 from the point of attachment of the petiole, which passes down into the 

 stone, leaving an opening like the pipe of a funnel. 



Hab. — Near Fort Harker, Kansas. Chs. Sternberg. 





