74 THE FLORA OF THE DAKOTA GROUP. 



Habitat: Ellswoi-th County, Kansas. Nos. 763 and 764 of the collec- 

 tion of the iiiusemn of the University of Kansas; E. P. West, collector. 



Platanus prem^va Lesq. var. iNTEaRiFOLiA. 

 PL XLIX, Fig. 4. 



The leaf is very small, the borders quite entire and the secondaries are 

 of the same character as those of J', primffva Lesq. 



It seems to be merely a young, not entirely developed, leaf of the same 

 species. 



Habitat: Near Fort Harker, Kansas. No. 2730 of the U. S. National 

 ^luseum. 



Platanus obtusiloba Lesq. 

 PI. X, Fig. 2. 



Cret. Fl., p. G9, PL Vli, Figs. 3, 4. 



Leaves small, palmately, irregularly trilobate ; lobes short, olnuse ; 

 borders undulate; primary nerves three to five, palmate from above the basal 

 border of the long petiole. 



The leaf figured here agrees on the whole with the above short diag- 

 nosis of the species and is surely correctly referred to it. It difters merely 

 in the apparent texture of the leaf, whicli, altliough polished on the surface, 

 seems rather membranous and not very thick. The lateral jn-imary nerves 

 are not opposite, a difference which is not of specific value, as in both 

 figures of the species (loc. cit., PI. vii, Figs. 3, 4) one of the leaves is nor- 

 mallv nerved, while the other has four primary nerves diverging from the 

 same jioint and one of a lower degree placed far below, nearly as strong as 

 the primary ones. The borders are also less undulate and the secondaries 

 are rather camptodrome than craspedodrome, some of them forking quite 

 near the borders, the divisions passing upward and running onto the borders 

 or along them. 



The species is very rare and distinctly characterized. It has not l)efore 

 l»een found in Kansas. 



IIal)itat : Near Carneiro, Ellsworth County, Kansas. No. o4 of the 

 collection of the University of Kansas. Collected by E. P. West. 



Platanus Nkwberbiana Heer. 



PhylL Cr<:'t. dn N6br., p. 16, PL ix. Fig. 3; Lesquerenx, Oret. FL, ji. 72, PL viii. Figs. 



2,3; PL IX, Fig. 3. 



