MIOCENE FLORA— BAD LANDS. 233 



MAGNOLIACE^E. 



MAGNOLIA, Linn. 



"U. S. Geol. Rep.," vii, p. 247. 



Magnolia Hilg-ardiana, Lesqx. 

 Ibid., p. 249, pi. xliv, fig. 4. 



A fine fully-preserved specimen of a leaf of this species is in Professor 

 Winchell's collection from the Yellowstone Valley. 



TILIACE^E. 



TILIA, Linn. 

 Tilia antiqua, Newby. 

 "Later Ext. Fl. of N. Am.," p. 52, pi. xvi, figs. 1, 2. 



The leaf representing this species is a little smaller than those figured 

 by Dr. Newberry. It is oval in outline, broadly deltoid to the obtuse apex, 

 rounded and subcordate at base, 8-centimeters long, 7 broad, very obtusely 

 and broadly crenate on the borders, the teeth being still broader and more 

 obtuse than figured by the author. 



Hob. — Yellowstone Valley. Sent by Professor N. H. Winchell. 



ACERACE^E. 



ACER, Adans. 



Acer arctic um, Heer. 



Plate XLIX, Figs. 8, 9. 



Heer, "Fl. Arct," iv, p. 86, pis. xxii, xxiii, xxiv, fig. 1; xxv, figs. 1-3. 



Leaves longpetioled, cordate, emarginate at base, palmately five-nerved, short- 

 lobate or without lobes; lobes unequal, coarsely dentate ou the borders; teeth unequal, 

 obtuse; fruits broadly alate, the wings diverging, not sinuate at base; seeds short- 

 ovate. 



The description is copied from Heer, loc. cit., and the fragments of 



leaves which I refer to the species represent only part of the characters — 



fig. 8, the lobate, obtusely dentate borders; fig. 9, the basilar nervation. 



