160 TUE FLORA OF THE DAKOTA GROUP. 



CiSSITES INGENS Lesq. var. PABVIFOLIA, u. viir. 

 PI. LVII, Figs. 3, 4. 



These two leaves represent a small form of the species. Thoiigli hnv- 

 iug' evidently the same general characters, Fig. 2, PI. XIX, shows the luiion 

 of the primary nerves at a point far above the basal border of the leaf and 

 the lobes and their subdivisions are broader and shorter. 



Fig. 3 has the lobes narrower, more deeply cut, the nervilles oblique 

 and more distinct, and the union of the primaries above the base of the leaf. 

 The fragment 2a of PI. XIX appears to have had the point of union of the 

 pnmaries still higher than Fig. 2, or as it is in the reconstructed figure t)f 

 a. formosus Heer (Fl. Foss. Ai-ct, vol. 6, Abth. 2, PI. xxi, Fig. 8). The 

 ninnerous leaves of C. inr/ens show this disposition to be merely casual. 



Habitat: Near Fort Harker, Kansas. No. 2737 of the U. S. National 

 Museum. 



CiSSITES ALATU8, sp. nOV.' 



PI. XXm, Fig. 6. 



Leaf small, thickish, with smooth surface, deeply palmately trilobate; 

 lateral lobes at right angles, long-obovate or enlarged to an ol)tuse apex, 

 the median nerve broader and shorter, enlarged, truncate and obtuseh' 

 short trilobate at apex; primary nerves palmately trifid, the lateral supra- 

 Ijasilar, nearly at right angles, branching on both sides; secondaries at a 

 distance from the primary ones, two or three pairs entering the upper lobes, 

 all branching like the lateral primaries in camptodrome divisions. 



The form of this leaf is remarkable, Ijeiug like a combination of Aralia 

 with Liriodenth'on or with Platanus, like I', ohtusiloba Lesq. (Cret. Fl., PI. 

 VII, Fig. 3), lla^^ng the same character of nervation and about the same 

 dispo.sition of the lobes as this last species. The basilar lobes are, however, 

 nuich longer, and the apex of the leaf is enlarged and trilobed, presenting 

 altogether the facie.s and the essential characters of C. foriuosus Heer, as 

 figured on PI. XXIII, Fig. (3 (loc. cit.). 



Habitat: Ten miles northeast of Delphos, Kansas. No. 4034 of the 

 collection of Mr. R. D. Lacoe. 



'This Bpecies was later compared by Prof. Lesquereux to Liriodendron Gardneri Sap. (Origine Pal. 

 des arbres cnlt. ou utilises par rhomme, p. 269, text, Fig. I), but there is no further indication that he 

 intended to transfer it to Liriodendron. A comparison of the two figures shows a very great similarity, 

 the principal difference being the supra-basilar position of the lateral primaries in C. alaliu. — F. H. K- 



