lesquereux.] ENUMERATION OF CRETACEOUS PLANTS. 355 



AMPELOPHYLLTIM OVATUM. 



Celtis ? ovata Lesqx., Cret. Flora, p. 66, PL IV, figs. 2, 3. 



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

 enlarged toward the truncate or subcordate base, abruptly curving to a long 

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

 two or three pairs, at a, distance from the 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 fibrillar 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. 



Hamamelites Kansaseana. PI. VII, fig. 4. 



Alnus Kansaseana, Lesqx., Cret. Flora, p. 62, PL XXX. fig. 8. 



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

 obtuse, undulate, pinnately nerved; veins parallel, ascending to the borders 

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

 loivest, which is more open and curving along the borders. 



The specimen figured here is more complete than the one described 

 in the Cret. flora. No 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; while in the other fragment figured in Cret. Flora, the 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, Chs. Sternberg. 



Hamamelites quadrangularis. 



Alnites quadrangularis, Lesqx., Cret. Flora, p. 62, PL IV, fig. 1. 



Leaf subcoriaceous, small, broadly rhomboidal in outline, with obtuse 

 angles ; borders entire, undulate, rounded to a short petiole (broJcen); nerva- 

 tion pinnate ; veins parallel, craspedodrome, except the lower pair mere mar- 

 ginal veinlets. 



The leaf, whose areolation is not distinct, has apparently the same 

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

 shape and its size. Though the veins are thicker it may represent the 

 same species. 



POLYCARPICJ3. 



Magnolia tenuifolia, Lesqx., Cret. Flora, p. 92, PI. XXI, fig. 1. 



Leaf large, oblong, rounded upward to an obtuse point? (broken), nar- 

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

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

 dejlexed near the point of insertion to the middle nerve. 



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

 Leaves subcoriaceous ovate-lanceolate or elliptical, obtusely pointed, entire 



