knowlton.] TERTIARY PLANTS OF NORTH AMERICA. 207 
Salix angusta Al. Br. In Buckl. Geol.; also in Stizeuberger Verst, 
p. 77, 1851; Lx., Ann. Kept. U. S. Geol. and Geogr. Surv. Terr. 1871, 
suppl., p. 0, 1871 [1872]; Tert. PI., p. 168, pi. xxii, f. 4, 5, 1878. 
Green Eiver group : Green Eiver Station, Wyoming. 
Tertiary : Montana, Wyoming, Kentucky, California, etc. 
Salix californica Lx. Mem. Mus. Oomp. Zool., vol. vi, no. 2, p. 10, pi. 
i, f. 18-20, 1878. 
Miocene: Table Mountain, California. 
Salix cuneata Newby. Later Extinct Floras, p. 21, 1868. 
Dakota group : Mouth of Big Sioux, Nebraska. 
Salix deleta Lx. Fl. Dak. Gr., p. 49, pi. iii, f. 8, 1892. 
Dakota group : Kansas. 
Salix densinervis Lx. Am. Journ. Sci., vol. xxvii, p. 364, 1859; Geol. 
Tenn., p. 427, pi. K, f. 9, 1869. 
Pleistocene?: Somerville, Fayette County, Tennessee. 
Salix elliptica Lx. Mem. Mus. Comp. Zool., vol. vi, no. 2, p. 10, pi. i, 
f. 22, 1878. 
Miocene: Chalk Bluffs, California. 
Salix elongata O. Web. Paheontogr., vol. ii, p. 177, pi. xix, f. 10, 1853; 
Lx., Ann. Eept. U. S. Geol. and Geogr. Surv. Terr., p. 372, 1872 [1873] ; 
Tert. FL, p. 169, pi. xxii,f. 6, 7, 1878. 
Green Eiver group : Elko Station, Nevada. 
Salix Engelhardti Lx. Proc. U. S. Nat. Mus., vol. xi, p. 17, pi. viii, 
f. 2, 1888. 
Miocene: John Day Valley, Oregon. 
Salix evanstoniana Lx. Ann. Eept. IT. S. Geol. and Geogr. Surv. 
Terr. 1871, suppl., p. 10, 1871 [1872]. [Not afterwards mentioned by 
author.] 
Laramie group?: Evanston, Wyoming. 
Salix flexuosa Newby. = Salix protesefolia flexuosa. 
Salix groenlandica Heer. Fl. Foss. Arct., vol. i, p. 101, pi. iv, f. 8-10, 
1868; Lx., Ann. Eept. U. S. Geol. and Geogr. Surv. Terr., p. 296, 1871 
[1872], [Not afterwards recognized by Lesqucreux.] 
Laramie group? Six miles above Spring Canyon, Montana. 
Salix Hayei Lx. Fl. Dak. Gr., p. 48, pi. iii, f. 7, 1891. 
Dakota group: Kansas. 
Salix inaequalis Newby. Fl. Amboy Clays, p. 67, pi. xvi, f. 1, 4, 6; 
xvii, f. 2-7, 1895 [1896]. 
Amboy clay: Woodbridge, New Jersey. 
Salix integra Gbpp. Zeitschr. Deutsch. Geol. Gesell., vol. iv, p. 493, 
1852; Lx., Ann. Eept. U. S. Geol. and Geogr. Surv. Terr., p. 397, 1873 
[1874]; Tert. F., p. 167, pi. xxii, f. 1, 2, 1878. 
: Black Buttes, Wyoming; Golden, Colorado; Corral 
Hollow, California. 
Salix islandicus Lx. Am. Journ. Sci., vol. xxvii, p. 360, 1859. 
: Bellingham Bay. 
