246 CATALOGUE OF THE CRETACEOUS AND [bull. 152. 
ZINGIBERITES Heer. FL Tert. Helv., vol. iii ? p. 172, 1859. 
Zingiberites dubius Lx. Tert. FL, p. 95, pi. xvi, f. 1, 1878. 
Zingiberites? undulatus * Lx. Ann. Kept. U. S. Geol. and Geogr. Surv. Terr., 
p. 396, 1873 [1874] . [* Preoccupied by Z. undulatus Heer, Bait. Fl., p. 64.] 
Denver group: Golden, Colorado. 
Zingiberites undulatus Lx. = Zingiberites dubius. 
ZIZYPHUS Tournefort. Ex. Linnaeus, Syst., ed. i, 1735. 
Zizyphus Beckwithii Lx. Oret. and Tert. FL, p. 125, pi. xix, f. 5, 1883. 
Denver group: Golden, Colorado. 
Zizyphus cinnamomoides Lx. Tert. FL, p. 277, pi. Hi, f. 7, 8, 1878. 
Ceanothus cinnamomoides Lx. Ann. Kept. IT. S. Geol. and Geogr. Surv. Terr., 
p. 289, 1871 [1872]. 
Green Eiver group: Green River Station, Wyoming. 
Fort Union group: Seven-Mite Creek, Montana. 
Zizyphus dakotensis Lx. Fl. Dak. Gr., p. 167, pi. xxxvi, f. 4-7, 1892. 
Dakota group: Kansas. 
Zizyphus distortus Lx. Ann. Eept. U. S. Geol. and Geogr. Surv. 
Terr., p. 404, 1873 [1874]; Tert. FL, p. 275, pi. li, f. 7-9, 1878. 
Denver group: Golden, Colorado. 
Zizyphus elegans Hollick. Bull. Torr. Bot. Club, vol. xxi, p. 58, pi. 
clxxvii, f. 9, 10, 1894. 
Cretaceous: Glen Cove, Long Island. 
Zizyphus fibrillosus Lx. Tert. FL, p. 276, pi. lii, f. 1-6, 1878. 
Ceanothus fibrillosus Lx. Ann. Rept. U. S. Geol. and Geogr. Surv. Terr., p. 
381,1872 [1873]. 
Denver group : Golden, Colorado. 
Zizyphus hyperboreus? Heer Lx. = Zizyphus Lesquereuxii. 
Zizyphus Lesquereuxii nom. nov. 
Zizyphus hyperboreus? Heer. Lx., Ann. Rept. U. S. Geol. and Geogr. Surv. 
Terr., p. 389, 1872 [1873] ;■ Tert. FL, p. 276, pi. li, f. 15, 1878. [Not Z. hyper- 
boreus of Heer.] 
Denver group: Golden, Colorado. 
Laramie group ?: Carbon, Wyoming. 
Zizyphus Lewisiana Hollick. Bull. Torr. Bot. Club, vol. xxi, p. 58, 
pi. clxxx, f. 13, 1894. 
Cretaceous: Oak Neck, Long Island. 
Zizyphus longifolia Newby. Proc. IT. S. Nat. Mus., vol. v, p. 513, 
1882 [1883]. 
Eocene : Green Kiver, Wyoming. 
Zizyphus Meekii Lx. Ann. Rept. U. S. Geol. and Geogr. Surv. Terr., 
p. 388, 1872 [1873]; Tert. FL, p. 275, pi. li, f. 10-14, 1878; Ward, Bull. 
U. S. Geol. Surv., no. 37, p. 74, pi. xxxiii, f. 5, 6, 1887. 
Denver group: Mount Bross, Middle Park, Colorado. 
Laramie group: Black Buttes, Wyoming. 
Laramie group?: Carbon, Wyoming. 
Livingston beds : Bozeman coal field, Montana. 
