LESQuzKEus.] • ENUMERATION OF CRETACEOUS PLANTS. 363 



Peotophyllu]m Haydenii, Lesqx., Cret. Flora, p. 106, PI. XVII, fig. 3. 



Leaves small, coriaceous, smooth, ohlong-ovate, pointed, deeply irregularly 

 vndulate-lobed, abruptly rounded to the base, subpalmately three-nerved ; 

 secondary reins parallel, straight to the borders, basilar veins tico or three 

 pairs at right angles to the middle nerve. 



The basilar nervation of this species, as also of the following, is of the 

 Credneria type. 



Peotophylltjm ceebnerioides, sp. nova. PI. Ill, fig. 1; PI. VIII, 



fig. 4. 

 I/eaves small, nearly round, truncate at the base, long petioled ; borders 

 entire, undulate ,' nervation obscurely trijid ; secondary veins on various 

 angles of divergence. 



These leaves, of which we have many specimens, vary in size from six 

 to eight centimeters, and are as broad as long ; they are more or less 

 deeply uiidnlate, but the borders are entire, though all the veins and 

 their divisions pass to the borders ; the petiole is comparatively long 

 and slender and the secondary veins more or less open, according to 

 their position, being at a right angle to the middle nerve near the base 

 and at an acute angle of divergence near the top. As in the former 

 species, the leaves are obscurely tripalmately-nerved, the lower lateral 

 primary veins above the borders being underlaid as in Credneria by two 

 pairs of thinner veins in right angle. In this case, however, as these 

 lower veins branch, and have the same direction as those above, they are 

 rather secondary veins, like the others, and the nervation should be 

 considered as pinnate. 

 ■ Habitat. — Mostly found near Fort Harker, Kansas, Clis. Sternberg. 



Peotophyllum? Mudgei, Lesqx., Cret. Flora, p, 106, PI. XVIII, fig. 3. 



Leaf thich, coriaceous, ovate-obtuse, enlarged and truncate at base, equally 

 denticulate ; middle nerve very thiclc ; secondary veins alternate, more or less 

 branching, craspedodrome. 



The leaf, the only fragment of which is figured, is of uncertain refer- 

 ence. 



Anisophyllum semi-alatum, Lesqx., Cret. Flora, p. 98, PI. VE, figs. 



1-5. 



Leaves thich, coarsely veined, ovate or obovate in outline, either abruptly 

 narroiced, suhtruncate and subcordate to the petiole, or rounded ivedgeform 

 to the base, irregularly lobate on one side, deeply undulate on the borders ; 

 nervation irregularly three to five palmate from above the base of the leaves ; 

 primary veins much divided. 



EEEiiioPHYLLTBi FiMBEiATUM, Lesqx., Cret. Flora, p. 107, PI. VIII, 



fig. 1. 

 Leaf peltate, Icidney -shaped, ivith an entire broadly truncate base ; bor- 

 ders dentate by equal hastate or auricled, and pointed teeth; nervation 

 seven palmate. 



VEGETABLE ORGANISMS OF UNCERTAIN AFFINITY. 



Phyllites betul^folius, Lesqx., Cret. Flora, p. 112, PI. XXVIII, 



figs. 4, 7. 

 Leaves small, mostly in fragments, round-ovate, truncate at the top, nar- 

 rowed to the base by a round curve } borders dentate; nervation pinnate, 

 irregular, craspedodrome. 



