knowlton.] DESCRIPTION OF SPECIES. 57 
Magnolia pulohra Ward. 
Magnolia pulchra Ward, Syn. Fl. Lar. Gr., p. 55$ PI. LX, figs. 2,3 (1886); Types 
Lar. FL, p. 103, PI. XLVIII, figs. 3,4 (1887;. 
Habitat. — Point of Rocks, Wyoming. 
LlRIODENDRON LARAMIENSE Ward. 
Liriodendron laramiense Ward, Syn. Fl. Lar. Gr., p. 556, PI. LX, fig. 1 (1886); Types 
Lar. Fl., p. 102, PL XLVIII, fig. 2 (1887). 
The specimen figured is the only one thus far obtained. It lacks the 
upper portion of the leaf, but the portion preserved has the nervation 
of Liriodendron, and it is therefore reasonably safe to consider it as 
belonging to this genus. 
Habitat. — Point of Rocks, Wyoming, gray sandstone cliff north of 
station. Collected by Lester F. Ward, September, 1881. 
ASIMINA EOCENICA? Lx. 
PL XIV, fig. 3. 
Asimina eocenica Lx.. Tert. FL, p. 251, PL XLIII, figs. 5-8 (1878) ; Stanton and Knowl- 
ton, Bull. Geol. Soc. Am., Vol. VIII, p. 140, 1897. 
The collection contains a single specimen that with little doubt 
belongs to this species. It has, as may be seen, the same shape, the 
same very thick petiole and midrib diminishing in size above, and 
approximately the same nervation. The secondaries are at a little 
more acute angle of divergence, and perhaps pass up along the margin 
for a greater distance; the difference is slight, and I have placed it 
under this species. The finer nervation is not retained. 
Habitat. — Coal mine on north fork of Dutton Creek, near old stage 
road, Laramie Plains, Wyoming. Collected by Knowlton, Stanton, and 
Knight, July 28, 1896. The species has also been found in the Denver 
beds at Golden, Colorado, and at Black Buttes, Wyoming. 
Malapoenna macrophylloides n. sp. 
PL XIV, figs. 4, 5. 
Leaf large, firm in texture, oblong in outline, entire, slightly inequi- 
lateral at base; petiole short, thick; midrib thick in the lower part, 
becoming thinner above; secondaries about eight pairs, opposite or 
rarely alternate; intermediate secondaries thin, extending half the dis- 
tance to the margin ; lower secondaries at an acute angle, those in the 
upper part of the leaf at a broader, all camptodrome, arching in a series 
of large regular bows, from the outside of which proceed frequently a 
series of smaller bows nearly or quite tilling the space between the sec- 
ondaries and the margin; nervilles broken, producing a very peculiar 
irregularly rectangular areolation. 

