DESCRIPTION OF SPECIES— ZINGIBERACE^. 95 



Habitat. — C.irbon Station, in shale from below the main coal witli Equi- 

 setum Haydenii, Topulus arctica, and other Miocene species. The other leaf 

 not figured has been communicated by Dr. A. C. Peak, from the white sand- 

 stone of Canon City Lignitic Measures. I have found it also in fragments 

 about three miles east of Colorado City, near the Gehrung coal, with Sabal 

 leaves, and seen it also in fragments at Black Buttes. These fragments, too 

 incomplete for determination, may belong to a different species. 



SCITAMINEtE. 

 ZINGIBERAOE^. 



ZINGIBERITES, Heer. 

 Ziugiberites dubiiis, Lesqx. 

 Plate XVI, Fig. 1. 

 Zingiberitesf undulatus, Lesqx.," Annual Report, 1873, p. 3'JG. 



Fragments of a largo leaf, outlines not preserved ; surface equally undulate, multinerved, in right 

 angle to the folds; primary veins distinct, parallel ; intermediate veinlots six to seven, very thin. 



The relation of these fragments is uncertain. They represent parts of 

 a subcoriaceous leaf, with surface undulations formed by deep furrows, which, 

 scarcely marked in some places, do not break the connection of thu primary 

 veins. These are somewhat thick, separated by six or seven thin veinlets, 

 indistinctly seen through the epidermis. Of the three species of this genus 

 published by Heer, the only one to which ours may be compared is 2^. mul- 

 tinervis (Fl. Tert. Helv., iii, p. 172, pi. cxlviii, figs. 13-15). It represents 

 some traces of the outlines of a large leaf, with a thick midrib, its surface 

 distinctly nerved with somewhat undulate primary veins, which, as seen in 

 fig. 15 b, have five thin intermediate veinlets. The character of the nerva- 

 tion is therefore the same as in the fragments which I refer to this genus, 

 the primary veins being at the same distance, of about three millimeters, as 

 in fig. 14, and in some places scarcely two millimeters, as in figs. 13 and 15 

 of the same author. 



Habitat. — Golden, Colorado Territory; very rare. 



* The uame of Z. undulatus, sp. nov., was employed by mistake in the short description of this 

 species, the same having been used by Heer in Bait. Fl., p. 64, a work then unknown to me. 



