tESQtJEKEUx.] ENUMEEATION OF CRETACEOUS PLANTS. 355 



Ampelophyllum OVATUM. 



Celiis ? orata Lesqx., Cret. Flora, p. 66, PL IV, figa. 2, 3. 



Leaves thiclcish, membranaceous, obtuse or truncate at the point, gradually 

 enlarged toicard the trancate or suhcordate base, abruptly curving to a long 

 petiole, borders entire, undulate three-nerved, from the base, secondary veins 

 two or three pairsj at a distance from tJie primary ones, all craspedodrome. 



These two leaves evidently represent the same species, but their refer- 

 ence to this division is not positive. As in the former species, the lower 

 veins are irregularly divided, the, fibrilli3e distinct, at least in fig. 3, which 

 has also one pair of marginal veinlets^ the subdivision of the veins along 

 the borders is, however, obsolete, though the veinlets appear to pass up 

 into them. 



Hajiajielites Kansaseana. PL VII, fig. 4 



AInus Kansaseana, Lesqx., Cret. Flora, p. 62, PI. XXX. fig. 8. 



Leaves membranaceous, oval or obovate rounded or suhcordate to the base, 

 obtuse, undulate, pinnately 7",ervedy veins parallel, ascending to the borders 

 in an acute angle of divergence, branching outside, craspedodrome except the 

 lotcest, ichich is more open and curving along the borders. 



The specimen figured here is more complete than the one described 

 in the Cret. flora, ISTo traces of denticulation are observable along 

 the borders, but regular deep undulations, which near the point pass to 

 obtuse teeth. Except the two lower pairs of veins, all the others and 

 their divisions reach the borders ; they are parallel, under an angle of 

 divergence of 40°, equidistant and deeply marked. In this specimen 

 the middle nerve passes under the border-base of the leaf, which is 

 rounded 5 while in the other fragment figured in Cret. Flora, th€ border 

 base is cordate, and curves on both sides to the middle nerve. 



From the opinion of Saporta, the author of the genus in the Sezane 

 flora, the reference of these leaves to the Hamamelites appears legiti- 

 mate. 



Habitat. — Fort Harker, Kansas, €hs, Sternberg, 



HA]MAMELITES quadeang-ulaeis. 



AJnites quadrangularis, Lesqx., Cret. Flora, p. 62, PI. IV, fig. I. 

 Leaf sul)coriaceous, small, broadly rhomboidal in outline^ with obtuse 

 angles ) borders entire, undtilate, rounded to a short petiole [broTcen); nerva- 

 tion pinnate ; veins paraU&l, craspedodrome, except the lower pair mere mar- 

 ginal veinlets. 



The leaf, whose areola,tion is not distinct, has apparently the same 

 ijharacters of nervation as in the former species, differing merely by its 

 shape and its si2;e. Though the veins are thicker it may re^jresent the 

 same species. 



POLYOAEPIC.^. 



MACr:s^o.LiA tenuifolia, Lesqx., Cret. Flora, p, 92, PI. XXI, fig. 1. 



Leaf large, oblong, rounded upicard to an obtuse point f [brolcen), nar- 

 rowed in a curve to a short slender petiole ; middle nerve straight, narrow ; 

 lateral veins alternate, on a broad angle of divergence, slender, undulate, 

 deflexed near tJw point of visertion to the middle nerve. 



Magnolia alteenans, Heer, Cret. Flora, p. 92, PI. XVIII, fig. 4. 

 Leaves subcoriaceous ovate-lanceolate or elUptical, obtusely pointed^ entire 



