knowlton.] TERTIARY PLANTS OF NORTH AMERICA. 29 
ACROSTICHUM Linnaeus. Gen. PI., p. 322, 1737. 
Acrostichuxn crassifolium Font. Potomac Fl., p. 105, pi. xvi, f. 7, 
1889. 
Potomac formation : Fredericksburg, Virginia. 
Acrostichum hesperium ISTewby. Proc. U. S. Nat. Mus., vol. v, p. 503, 
1882 [1883]. 
Eocene : Green River, Wyoming. 
ADIANTITES Goppert. Syst. Filic. Foss., p. 216, 1836. 
Adiantites gracillimus Lx. Oret. and Tert. Fl., p. 137, pi. xxi, f. 8, 
1883. 
Green River group : Florissant, Colorado. 
Adiantites Klipsteini (Dunk.) Brongn. = Glossozamites Klipsteiui. 
Adiantites praelongus Dn. Trans. Roy. Soc. Canada, vol. i, sec. iv, 
p. 25, pi. v, f. 19, 1882 [1883]. 
Upper Cretaceous: Baynes Sound, Vancouver Island, Nanaimo. 
-ffiSCULOPHYLLUM Dawson. Trans. Roy. Soc. Canada, 2d ser., 
vol. i, sec. iv, p. 149, 1895-96. 
.ffisculophyllum hastingense Dn. Trans. Roy. Soc. Canada, 2d ser., 
vol. i, sec. iv, p. 149, pi. viii, f. 16, 1895-96. 
Eocene: Burrard Inlet, British Columbia. 
-ffiSCULUS LinnaBus. Syst., ed. ii, p. 22, 1740. 
-ffisculus antiquus Dn. Rept. on Geol. and Res. near Forty-ninth 
Parallel, appen. A, p. 330, pi. xvi, f. 8, 9, 1875. 
Bad Lands: West of Woody Mountain, Canada. 
Aleurites eoceneca Lx.=Grewiopsis eocenica. 
ALIANTHOPHYLLUM Dawson. Trans. Roy. Soc. Canada, vol. 
viii, sec. iv, p. 88, 1890 [1891]. 
Alianthophyllum incertum Dn. Trans. Roy. Soc. Canada, vol. viii, 
sec. iv, p. 88, f. (in text) 25, 1890 [1891]. 
Eocene'?: Tranquille River, British Columbia. 
ALIANTHUS Desfontaines. Act. Ac. Paris, p. 265, 1786. 
Alianthus longe-petiolata Lx. Cret. and Tert. Fl., p. 197, pi. xl, 
f. 6, 7, 1883. 
Green River group: Uinta County, formerly but wrongly called 
Randolph County, Wyoming. 
Alianthus ovata Lx. Cret. and Tert. FL, p. 254, pi. Ii, f. 7, 8, 1883. 
Miocene: Bridge Creek, Oregon. 
ALICMACITES Saporta. Ann. sci. nat. Bot., 4th ser., vol. xvii, p. 
228, 1862. 
Alismacites dakotensis Lx. Fl. Dak. Gr., p. 37, pi. ii, f. 10, 1892. 
Dakota group : Kansas. 
