knowlton.] TERTIARY PLANTS OF NORTH AMERICA. 51 
Betulites Westii quadratifolius Lx. Fl. Dak. Gr., p. 62, pi. v, f. 9, 1892. 
Dakota group : Kansas. 
Betulites Westii reniformis Lx. PL Dak. Gr., p. 62, pi. v, f. 5, 1892. 
Dakota group : Kausas. 
Betulites Westii rhomboidalis Lx. Fl. Dak. Gr., p. 62, pi. v. f. 6, 7, 
1892. 
Dakota group: Kansas. 
Betulites Westii rotundatus Lx. Fl. Dak. Gr., p. 61, pi. iv, f. 12-16, 
1892. 
Dakota group : Kansas. 
Betulites Westii subintegrifolius Lx. Fl. Dak. Gr., p. 61, pi. iv, 
f. 1-4, 1892. 
Dakota group : Kansas. 
Betulites, stipules of, Lx. Fl. Dak. Gr., p. 65, pi. v, f. 18, 1892. 
Dakota group : Kansas. 
BLECHNUM Linnams. Sp. PI., ed. ii, p. 1077, 1753. 
Blechnum Gbpperti Ett. Farnkrauter, p, 153, 1865; Lesquereux, 
Ann. Kept. U. S. Geol. and Geogr. Surv. Terr., p. 283, 1871 [1872]. 
[Not afterwards recognized by Lesquereux.] 
Green Eiver group ? : Henry's Fork. 
BOMBAX Linnaeus. Sp. PI., ed. i, p. 511, 1753. 
Bombax virginiensis Font. Potomac Fl., p. 310, pi. cli, f. 4, 1889. 
Potomac formation : Near Brooke, Virginia. 
BRACHYPHYLLUM Brongniart. Prodrome d'une Hist. d. Veg. 
Foss., Paris, 1828, p. 109. 
Brachyphyllum crassicaule Font. Potomac Fl., p. 221, pi. c, f. 4 ; cix, 
f. 1-7; ex, f. 1-3; cxi, f. 6-7; cxii, f. 6-8; clxviii, f. 9, 1889. 
Potomac formation : Trents Reach, near Brooke, and near Dutch 
Gap Canal, Virginia. 
Brachyphyllum crassum Lx. = Brachyphyllum macrocarpum. 
Brachyphyllum macrocarpum Newby. Fl. Amboy Clays, p. 51, 
[foot-note] 1895 [1896]. 
Brachyphyllum crassum* Lx. Proc. U. S. Nat. Mus., vol. x, p. 34, 1887; Fl. 
Dak. Gr., p. 32, pi. ii, f. 5, 1891 ; Newby, Fl. Amboy Clays, p. 51, pi. vii, f. 1-7, 
1895 [1896]. 
Thuites crassus Lx. Cret. and Tert. FL, p. 32, 1883 [1884]. 
Brachyphyllum sp. Kn. Bull. Geol. Soc. Am., vol. viii, p. 137, 1897. 
[* B. crassum Lx., antedated by B. crassum of Tenison-Woods, 1883.] 
Dakota group : Kansas. 
Amboy clay : New Jersey. 
Montana formation: Harper Station, Wyoming; North Fork Dut- 
ton Creek, Wyoming. 
Age?: Upper Kanab Valley, Utah. 
Brachyphyllum parceramosum Font. Potomac Fl., p. 223, pi. ex, f. 
4, 1889. 
Potomac formation: Near Telegraph Station, Virginia. 
