12 THE PALEONTOLOGY OF MINNESOTA. 
{Populites. 
PopuLires Liticiosus Heer. 
PLATE A, FIG. 3. 
Populus litigiosa Heer, Phyll. du Neb., 7, p. 13, Pl. 1, f. 2.  Newb’y, Notes on Extinct Flovas, p 8. 
Ilustr. Pl. III, f. 6; Pl. IV, f, 1. 
Leaves round, very entire at base; lateral nerves opposite in the lower pairs, alternate 
in the upper, all distant; nervilles strong, curved, not dividing, the upper forking; marginal 
nerve none or thin and short. 
Comparing the specimens from Minnesota with the figure in the “Phyll.” /.c. the 
identity is easily ascertained, though the figure of Heer represents a mere fragment. 
The author does not mention in the description the presence of a marginal or basilar 
nerve which in some leaves, as in the one from Minnesota, is quite strong, while in 
others it is thin and sometimes even indistinct. 
Hab. North side of the Big Cottonwood river, near New Ulm. 
Mus. Reg. No. 5155. 
PoOPULITES LANCASTRIENSIS Lesq.v. 
PLATE A, FIG 4. 
Cret. Fl. p. 58, Pl. UI, f. 1. 
Leaves large, broadly cordate ovate, obtusely pointed; borders entire, slightly undulate; 
basilar nerves in five, the upper alternate or sub-opposite, somewhat flexuous, branching from 
above the middle, all sub-camptodrome; nervilles very thin, the lower undivided, the upper 
broken and branching. 
The leaf is well preserved; the apex and the petiole, however, are destroyed; 
it is smaller than that in Cret. Fl. /. ¢., and more like that of Newb’y, Ilustr., 
Pl. 3, f. 7, named Populus cordifolia, but appears to be referable to the same species, 
though the basilar nerves are in three. 
Hab. North side of the Big Cottonwood river, near New Ulm, Minnesota. 
Mus. Reg. No. 5155 D. 
POPULITES WINCHELLI, sp. nov. 
PLATE B, FIG. 2. 
Leaf’ coriaceous, rhomboid-elliptical, borders regularly undulate-repand; nervation 
palmate-pinnatifid, obscurely craspedrome; medial nerve somewhat thick; basilar lateral 
nerves emerging a little above the top of the petiole, sparingly branching; secondaries thin, 
alternate, distant, parallel, simple. 
A fine leaf, 7cm. long without the petiole, which is broken 1 em. below the base 
of the leaf, 5 cm. broad in the middle. Its form is the same as that of P. repando- 
