266 PROCEEDINGS OF THE NATIONAL MUSEUM. vouM. 



described from Florissant. It belongs evidently to the Quercus vir- 

 giniana group or so-called live oaks, being, for instance, not unlike 

 certain forms of Q. affinis (Lesquereux) Knowlton, from the John Day 

 Basin of Oregon. The latter, however, has more teeth and a greater 

 number of secondaries. It also suggests some of the small leaves of 

 Q. consimilis Newberry,* but here, again, the teeth and secondaries 

 are more numerous. 



Family ULMACEAE. 



ULMUS TENUINERVIS Lesquereux. 



Ulrmis tenuinervis Lesquereux, Ann. Kept. U. S. Geol. and Geogr. Surv. Terr., 

 1873 [1874], p. 412; Kept. U. S. Geol. Surv. Terr., vol. 7 (Tert. Fl.) 1878, 

 p. 188, pi. 26, figs. 1-3. 



A single fine leaf in the Scudder collection. 



PLANERA MYRICAEFOLIA (Lesquereux) Cockerell. 



Plate 21, fig. 2. 



Planera myricaefolia (Lesquereux) Cockerell, Bull. Amer. Mus. Nat. Hist., vol. 



24, 1908, p. 87. 

 Planera longifolia myricaefolia Lesquereux, Kept. U. S. Geol. Surv. Terr., vol. 8 



(Cret. and Tert. Fl.) 1883, p. 161, pi. 29, figs. 15-27. 

 Podocarpus eocenica? Unger. Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 



8 (Cret. and Tert. Fl.) 1883, p. 140. 



The Lacoe collection of Florissant plants, now the property of the 

 United States National Museum, contains the specimen (U. S. N. M., 

 50,339; origmal No. 68, Lacoe collection) referred by Lesquereux to 

 Podocarpus eocenica f Heer, and which he says is "narrowly linear- 

 lanceolate, acute, narrowed into a short petiole." A careful examina- 

 tion of this leaf, which is here figured for the first time, discloses that 

 it is not entire, but has several distinct, very sharp teeth near the 

 apex, and two or three obscure teeth along the sides to a point at or 

 below the middle. The nervation consists of the rather strong 

 straight midrib, and numerous thin secondaries at a very acute angle 

 with it which enter the teeth. This of course excludes it from Podo- 

 carpus, and it is probably a narrow, sparsely toothed leaf of Planera 

 myricaefolia, being, for instance, very much like figures 21 and 22 of 

 Lesquereux' s plate of this species. 



CELTIS M cCOSHn Lesquereux. 



Celtis mccoshii Lesquereux, Rept. TJ. S. Geol. Surv. Terr., vol. 8 (Cret. 

 and Tert. Fl.) 1883, p. 163, pi. 38, figs. 7, 8. 



A specimen in the Scudder collection that imdoubtedly belongs 

 here, though the marginal teeth are slightly coarser and more dis- 

 tant. The shape of the leaf and its nervation are identical. 



1 Newberry, J. S., Mon. V. S. Geol. Surv., No. 35, 1898, pi. 43, flg. 4. 



