140 DESCRIPTION OF SPECIES. 



but of a Glt/ptostrobus, and these, like the diversity in the form of the 

 leaves, agree in character with G. Ungeri, Heer, quoted above, which is 

 now considered by the author as a variety of Gt. Europaeus. The cones 

 only are somewhat larger, as figured by Heer, and the stem leaves rather 

 obtuse than acuminate. As in the "Flora of Alaska," the same author 

 represents these scaliform leaves acute, even acuminate, and as in that of 

 Spitzbergen (" Fl. Arct.,"' iv, pi. xi, figs. 2-8) the same kind of leaves are 

 either obtuse or acuminate, the reference of the American form to the 

 species of Heer is sufficiently authorized. The species is closely related 

 to Glyptostrobus heterophyllus, Endl., of China, the only living species of 

 this genus. 



Ilab. — Very common at Florissant. The specimens figured are mostly 

 those of the Princeton Museum. 



PODOCARPUS, L'Herit. 



Podocarpus eocenica?, Ung. 



Leaves narrowly linear-lanceolate, acute, narrowed into a short petiole; medial 

 nerve distinct. 



This description refers to two leaves which agree with the description 

 and figure of this species by Unger (" Fl. of Sotzka," p. 28, pi. ii, figs. 11-16). 

 The medial nerve is flat and comparatively broad; the leaves are slightly 

 broader in the middle. 



Ilab. — Florissant. No. 68 of Lacoe Collection. 



GRAMINE^. 



POACHES, Heer. 



Poacites laevis, Heer. 



Hayden's "Ann. Rep.," 1871, p. 285. 



CYPERUS. 

 C y p e r 11 s C h a v a n n e s i , Heer. 



" U. S. Geol. Rep.," vii. p. 92, pi. ix, figs. 1, 2. 



CYPERITES, Lindl. 

 Cyperites Haydeiiii, sp. nov. 



Plate XXIII, Figs. l-3a. 



Leaves large, gradually enlarging upward from its root, linear above ; medial 

 nerve broad and flat ; lateral nerve parallel, distinct to the eye, separated by four or 

 five very thin intermediate veins. 



