knowlton.] TERTIARY PLANTS OF NORTH AMERICA. 31 
Alnus Kefersteinii (Gopp.) Ung. Lesquereux. Ann. Kept, U. S. Geol. 
and Geogr. Surv. Terr., p. 292, 1871 [1872J ; Tert. Fl., p. 110, pi. xviii, 
f. 6-S; lxiv, f. 11, 1878; Heer., Fl. Foss. Alask., p. 28, pi. iii. f. 7, 8, 
1869. 
Alnites Kefersteinii Gopp. De Floribus in Statu Fossili, p. 564, pi. xli, f. 
1-7, 1837. 
Eocene?: Alaska. 
Miocene: John Day Valley, Oregon; Shasta County, California. 
Alnus Kefersteinii (Gopp.) var. Heer. Fl. Foss. Alask.: K. Sv. 
Yetenskaps-Akad. Handl., vol. viii, Xo. 4, p. 28, pi. v, f. 9, 1869. [In 
Fl. Foss. Arct., ii, abt. ii, 1871.] 
Eocene?: Port Graham, Alaska. 
Alnus rubra Bong. Knowlton. Journ. Geol., vol. iii, p. 532, 189.5. 
Inter-glacial: Muir Glacier, Alaska. 
Alnus rugosa Lx. Bull. Mus. Comp. Zool., vol. xvi, p. 15, 1888. 
Denver group: Golden, Colorado. 
Alnus serrata Newby. Later Extinct Floras, p. 55, 1868. 
Fort Union group: Yellowstone Iviver, Montana and Dakota. 
Alnus sp., Penkallow. Trans. Roy. Soc. Canada, 2d ser., vol. ii, sec. iv, 
p. 70, 1896. 
Pleistocene: Scarboro Heights, Ontario. 
AMELANCHIER Medicus. Phil. Bot., i, p. 155, 1789. 
Amelanchier canadensis (L.) Medic, var. rotundifolia (Mx.) T. &G. 
Hollick. Bull. Torr. Bot. Club. vol. xix, p. 331, 1892. 
.Miocene? : Bridgeton. New Jersey. 
Amelanchier typica Lx. Cret. and Tert. Fl., p. 198, pi. xl.. f. 11, 1883. 
Green River group: Florissant, Colorado. 
Amelanchier typica var. Lx. Bull. Mus. Comp. Zool.. vol. xvi, p. 57, 
1888. 
Denver group: Golden. Colorado. 
Amelanchier similis Newby. Later Extinct Floras, p. 18. 1868: 111. 
Cret. and Tert. PL. pi. xxv.. f. 6. 1878. 
Fort Union group: Yellowstone River, Montana. 
Ament of Conifer (a) Font. Potomac Fl., p. 225, pi. cxxxvi. f. 2. 1889. 
Potomac formation: Near Brooke, Virginia. 
Ament of Conifer (b) Font. Potomac Fl., p. 225. pi. cxxxvi. f. 3, 1889. 
Potomac formation: Near Brooke, Virginia. 
Ament of Conifer (c) Font. Potomac FL, p. 226. pi. cxxxvi. f. 1. 1889. 
Potomac formation: Near Brooke. Virginia. 
Anient of Conifer (d) Font. Potomac Fl.. p. 226, pi. cxxxvi. f. 5, 1889. 
Potomac formation: Near Cherry Hill Station. Virginia. 
Ament of Conifer (e) Font. Potomac FL. p. 226. pi. cxxxv, f. 7. 1889. 
Potomac formation : Near Brooke, Virginia. 
Ament of Conifer f) Font. Potomac FL, p. 227. pi. cxxxvi, f. 8, 1889. 
Potomac formation: Near Brooke. Virginia. 
