LESQUEEEux.] PALEONTOLOGY LIGNITIC FLOEA SPECIES. 409 



Lycopodium prominens, sj?. nov. 



stem or branch slender, clichotoraous; divisions short, erect, slightly 

 open, distant, 2 centimeters long; leaves alternate or in spiral, cylindri- 

 cal, inflated to the more or less acute point, apparently connate at the 

 narrowed base, 4 to 5 milliaieters long, half a millimeter broad, half 

 open, some of them curved outside. With the sterile branch, the spec- 

 imen has a somewhat obscure fragment, apparently a crushed fruiting 

 ear, whose surface is rough or granulate. It is, however, too obscure 

 for positive identification. 



Rahitat. — Elko, Nev., Prof. Cope. 



Equisetum Wyomingense, sp. nov. 



Fragments of stems, equally distinctly striate, 2 centimeters broad, 

 articulate, bearing at the articulations whorls of thickish long rootlets. 

 These stems or rhizomas, evidently referable to Equisetum., are in pro- 

 fusion in the shale at the cut four miles west of Green Eiver Station ; 

 but none of the specimens have any remains of a sheath or of leaves 

 and branches. This form is comparable to E. Braunii, Heer., (Fl. Tert. 

 Helv., Ill, p. 157, PL cxlv, Fig. 29.) On the American specimens, how- 

 ever, the rootlets are in fascicles, diverging star like, much longer and 

 thicker than in Heer's species j at least 1 millimeter broad and 5 to 6 

 centimeters long. 



Rahitat. — Green Iliver. 



Taxodium dubium, Sternb. 



The species is represented by a large number of fragments or branches 

 with distichous, linear, short, obtuse leaves, narrowed and rounded to 

 the point of attachment, sessile. This form is rather comparable to 

 T. chtbium as described and figured by Heer in Fl. Arctica, (PI. ii, 

 Figs. 24, 26,) than to the variety T. distichum-mioceniciim, represented 

 in Spitz. Fl., (PI. iii,) whose leaves are slightly narrower proportionally 

 to their length. 



Rahitat. — Elko Station, very abundant, Prof. Cope. 



Glyptostrobus Europeus, A1. Br. 



Only two small branches are referable by their size and the form and 

 disposition of the leaves to this species. Some of the leaves are lingu- 

 late, short, appressed, mixed with linear-lanceolate-pointed, open, and 

 longer ones. The fragments are small, and do not bear any cones. The 

 shales of the same locality are, however, marked by irregular, generally 

 round-oval cavities, which appear to have been made by the imj)ressions 

 of cones of this species. 



Rahitat. — South Park, Oastello Eanch, Br. Rayden j near Florisant, 

 Prof. Cope. 



Sequoia angustifolia, Lesqx. 



A short diagnosis of this species is given in Eeport for 1872, (p. 372,) 

 from specimens from Elko Station. It was sent thisyear in a large number 

 of specimens, from the same locality especially, and all the specimens 

 bear the same character. Leaves comparatively narrow and pointed, 

 decurrent at base, half open or even nearly erect ; seeds large, round- 

 oval, truncate, at the slightly enlarged base, rounded at the top. It 

 is comparable to 8. NordcmMoldi, Heer, of the Spitzbergeu Flora, (Tab. 



