Report of the exploring expedition to the Rocky Mountains in the year 1842 : and to Oregon and north California in the years 1843-44 (1845)
Frémont, John Charles, 1813-1890, Torrey, John, 1796-1873, Hall, James, 1811-1898, United States. Army. Corps of Engineers · Washington : Blair and Rives, Printers · leaf 350
Description.—Frond pinnate or bipinnate; rachis long, and almost equal-ly slender throughout; branches numerous, regular, alternate, simple,^elongated, very slender, and flexuous. The branches are frequently folded back upon themselves, and undulated,tying like the finest thread upon the surface of… … 1 ■. Hi, ,ip! Lith. by £Web,-~ r HlVf.^,SiiY \ 307 [ 174 ] a magnifier. This fossil is very similar to the Fucoides sequalis of Brong.,(from the lower chalk,) except that the branches are longer and undivided. 10. Trichopteris gracilis, pi. 1, fig. 5. (No. 84 of collection.)Description.—Slender,…
