knowlton] TERTIARY PLANTS OF NORTH AMERICA. 95 
Equisetum marylandicum Font. Potomac Fl., p. 65, pi. ii, f. 10, 
1889. 
Potomac formation : Baltimore, Maryland. 
Equisetum nodosum Lx.= Phragmites cretaceus. 
Equisetum oregonense Newby. Proc. U. S. Nat. Mus., vol. v, p. 503, 
1882 [1883]. 
Miocene?: Currant Creek, Oregon. 
Equisetum Parlatorii (Heer) Sehimp. Pal. Veg., vol. i, p. 261, 1869. 
Physagenia Parlatorii Heer. Fl. Tert. Helv., vol. i, p. 109, pi. xlii, f. 2-17, 
1885; Dn., Rept. Geol. and Res., near 49th Parallel, Appen. A, p. 329, pi. 
xvi, f. 3, 4, 1875. 
: Great Valley, Canada. 
Equisetum robustum Newby. Bost. Journ. Nat. Hist., vol. vii, p. 
513, 1863. 
: Bellingham Bay, Washington. 
Equisetum scirpoides Mx. Dn., Can. Nat., vol. in, new ser., p. 73, 
1868; Geol. Hist. PL, p. 230, 1888. 
Pleistocene: Greens Creek, Ottawa Eiver, Canada. 
Equisetum similkamense Dn. Geol. Surv. Canada, Rept. of Prog 
ress 1877-78, p. 186, pi. B, 1878; Trans. Roy. Soc. Canada, vol. viii, 
sec. iv, p. 76, f. 1-ltf, 1890. 
Eocene*?: Similkameen Valley, British Columbia. 
Equisetum sylvaticum? L. Penhallow, Bull. Geol. Soc. Am., vol. i, 
p. 327, 1890. 
Pleistocene: Canada. 
Equisetum texense Font. Proc. U. S. Nat. Mus., vol. xvi, p. 263, pi. 
xxxvi, f. 1, 1893. 
Trinity division : Glenrose, Texas. 
Knoxville beds: Tehama County, California. 
Equisetum virginicum Font. Potomac Fl., p. 63, pi. i, f. 1-6, 8; pi. 
ii, f. 1-3, 6, 7, 9, 1889. 
Potomac formation : Dutch Gap Canal, Virginia. 
Equisetum wyomingense Lx. Ann. Rept. U. S. Geol. and Geogr. 
Surv. Terr., p. 409, 1873 [1874J; Tert. Fl., p. 69, pi. vi, f. 8-11, 1878. 
Green River group: Green River, Wyoming. 
Equisetum sp., Dn. Rept. Geol. and Res. near 49th Parallel, Appen. 
A, p. 329, 1875. 
Canadian Upper Laramie: Porcupine Creek. 
Equisetum sp., Paisley. Can. Nat., 2d ser., vol. vii, p. 270, 1875. 
Post pliocene : Bathurst, New Brunswick. 
Equisetum, rootlets of, Lx. Rept. on Clays in N. J., p. 28, 1878. 
Amboy clay : Washington, New Jersey. 
Equisetum sp. Lx. Cret. and Tert. Fl., p. 239, pi. 1, f. 8, 1883. 
Miocene: Corral Hollow, California. 
