294 PROCEEDINO,S OF THE NATIONAL MUSEUM. 



Populiis ■pyrifolia Kirchnee, Trans. St. Louis Acad. Sci., vol. 8, 1898, p. 185, pi. 15, 



tig. 4 [33,687]. 

 Porana cockerelli Knowlton, Proc. U. S. Nat. Mus., vol. 51, 1916, p. 287, pi. 27,fig. 3. 

 Porana similis Knowlton, Proc. U. S. Nat. Mus., vol. 51, 1915, p. 288, pi. 27, figs. 



1, 2 [34,736],— [3,4737]. 

 Porana tenuis Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 8 (Cret. and Tert. 



Fl.), 1883, p. 173 [50,344].— Knowlton, Proc. U. S. Nat. Mus., vol. 51, 1916, p. 286, 



pi. 27, figs. 4-6. 

 Potamogelon geniculatus Al. Braun. Lesquereux, Rept. U.S. Geol. Surv. Terr., 



vol. 8, (Cret. and Tert. Fl.), 1883, p. 142 [ ]. 

 Potaniogeton? verticillatus Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 8 (Cret. 



and Tert. Fl.), 1883, p. 142, pi. 23, fig. 5 [1,626]. 

 Pterocarya americana Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 7 (Tert. Fl.), 



1878, p. 290, pi. 58, fig. 3 [476]. 

 Quercus scudded Knowlton, Proc. U. S. Nat. Mus., vol. 51, 1916, p. 265, pi. 21, fig. 3 



[34,758]. 

 Rhamnus ellipticus Kirchner, Trans. St. Louis Acad. Sci., vol. 8, 1898, p. 183, pi. 15, 



fig. 3 [33,688]. 



= Rhamnus kirchneri. 

 Rhus acuminata Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 8 (Cret. and Tert. 



Fl.), 1883, p. 194, pi. 42, figs. 14 [1874], 15 [1871], 16 [1872], 

 Rhus cassioides Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 8 (Cret. and Tert. 



Fl.), 1883, p. 193, pi. 41, fig. 11 [1887]. 

 Rhus hilliae Lesquereux, Rept. U. 8. Geol. Surv. Terr., vol. 8 (Cret. and Tert. Fl.), 



1883, p. 194, pi. 41, figs. 13 [1,892], 14 [1,890], 15 [1,891]. 

 Rhtis rosaefolia (Lesquereux) Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 7 



(Tert. Fl.), 1878, p. 293, pi. 42, figs. 7 [358], 8 [359], 9 [360]. 

 Rhus rotundifolia KracHNER, Trans. St. Louis Acad. Sci., vol. 8, 1898, p. 184, pi. 12, 



fig. 2 [33,676]. 



= Hydrangea f florissantia . 

 Rhus subrhomboidalis Lesquereux, Rept. U. S. Geol. Sm-v. Terr., vol. 8 (Cret. and 



Tert. Fl.), 1883, p. 195, pi. 41, figs. 16 [1,882], 17 [1,883]. 

 Rhus trifolioides Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 8 (Cret. and Tert. 



Fl.), 1883, p. 196 [50,325].— Knowlton, Proc. U. S. Nat. Mus., vol. 51, 1916, p. 279. 

 Rhu^ vexans Lesquereux, Rept. U. S. Geol. Surv. Ten-., vol. 8 (Cret. and Tert. Fl.), 



1883, p. 195, pi. 41, fig. 20 [1,889]. 

 =Schmaltzia vexans. 

 Rosa hilliae Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 8 (Cret. aud Tert Fl.), 



1883, p. 199, pi. 40, fig. 17 [1,912]. 

 Rosa? inquirenda Knowlton, Proc. U. S. Nat. Mus., vol. 51, 1916, p. 273, pi. 17, fig. 1 



[34,741]. 

 Rosa scudderi Knowlton, Proc. U. S. Nat. Mus., vol. 51, 1913, p. 272, pi. 22, fig. 4 



[34,765]. 

 Salix amygdalaefolia Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 8 (Cret. and 



Tert. Fl.), 1883, p. 150, pi. 31, fig. 2 [1,682]. 

 -SaMz, species Knowlton, Proc. U. S. Nat. Mus., vol. 51, 1916, p. 260. pi. 13, figs. 4, 5 



[33,744, 33,745]. 

 Salvinia alleni (Lesquereux) Lesquereux, see Tmesipteris alleni. 

 Salvinia cyclophylla Lesquereux, Rept. TJ. S. Geol. Surv. Terr., vol. 7 (Tert. Fl.), 



1878, p. 64, pi. 8, fig. 10 [90]. 

 =PhyJUtes cyclophyllus (Lesquereux) HoUick. 

 Sapindus augustifolius Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 7 (Tert. Fl.), 



1878, p. 265, pi. 49, figs. 3 [390], 4 [391J, 6 [390]; vol. 8 yCrei. and Tert. Fl.), 1883, 



p. 181, pi. 37, figs. 3 [1,841], 6 [1,839]; pi. 39, fig. 12 [1,840]. 



