tESQUERBux.] PALEONTOLOGY LIGNITIC FLORA SPECIES. 395 



Hymenophtllitm confusum, sp. nov. 



Frond polypinnate ; tertiary (?) rachis grooved, thick, divisions in an 

 open, nearly right angle of divergence to the main rachis, dichotomous ; 

 pinnnles cuneiform, enlarged upward, dichotomously three, many 

 times divided in linear, short obtuse lobes, entered each by a simple 

 veiiilet diverging from dichotomous branches of the primary veins. The 

 divisions are decomposed many times, the last pinnule being only 3 

 millimeters long and 1^ millimeters broad ; all are crowded and mixed 

 upon another. The surface is minutely punctulate, as if it had been 

 tomentose or ciliate. The specimens are fragmentary. 



Habitat. — Golden. 



Selaginella Berthoudi, sp. nov. 



Stem slender, spreading, prostrateC?), or creeping{?), dichotomous, 

 divisions simple, or the longer ones the lowest, also dichotomous ; leaves 

 four-ranked, by two rows of alternate distichous linear-oblong. Ungulate, 

 pointed, longer leaflets, spreading on both sides of the stem and branches, 

 and two rows of small oval or nearly round ones, closely appressed to the 

 base of the longer leaves and covering it. The distichous leaflets are 

 3 to 4 millimeters long and 1 millimeter wide, the small ones less than 

 1 millimeter square. This fine species greatly resembles some species 

 of onr time, like 8. stolonifera, S. Martensii, &c. Its characters are dis- 

 tinctly recognizable. 



Habitat. — Golden. Discovered by Capt. E. Bertlioudj to whom the 

 survey owes the communication of this remarkable species. 



EQUISETUMC?) L^VIGATUM, Sp. noV. 



Stem thick ; its surface irregularly wrinkled lengthwise, not costate, 

 contracted at the articulations, of which only one is seen upon the speci- 

 men in the middle of the stem. The articulation bears the scars of 

 four branches, marked by whorls of somewhat undistinct, close rays, 

 enlarging from the center to the circumference. The characters are 

 not suflBciently discernible ; the scars of branches are scarcely distinct, 

 and the stem, apparently crushed above or below the articulation, is 

 nearly half as large on one side of it as on the other. It may represent 

 a root of Hquisetum marked around with the scars of rootlets. 



Habitat. — Sand Creek, W. G. Holmes. 



Sequoia Langsdorfii, A. Br. 



Is represented by small, somewhat obscure specimens. The leaves 

 are slightly shorter. It is the only dilference which may be remarked 

 in comparing it to the numerous figures published of this species by 

 European authors. It may represent the same species as Abietites du- 

 bius, Lsqx., from the Eaton mountains. (Hayden's Report, 1872, p. 347.) 



Habitat. — Black Butte, above main coal. 



Smilax(!) grandifolia(?), Ung. 



The lower half of the leaf only is preserved upon the specimen. Its 

 base is rounded to the petiole, three-nerved from the base or irregu- 

 larly five-nerved by the division, near its base, of one of the lateral veins, 

 and on the other by a marginal veinlet coming out from the top of the 

 petiole; middle nerve and lateral veins crossed by few thin branches 

 or oblique nervilles. The nervation is similar to that of Unger's species 

 in Sillog., (PI. ii, Figs. 5-8;) the form of the leaf, however, difi'ers, it being 

 rounded to the petiole, not cordate. 



Habitat. — East of Colorado Springs, A. C. Peale. 



