DESCRIPTION OF SPECIES— LA URINE.5i. 221 



now no other American specimens positively representing tliis species. All 

 the others formerly considered as referable to it had to be eliminated, cither 

 on account of their too incomplete state of preservation or as forcil)ly pass- 

 ing by transitions to C. affine. 



Habitat. — Spring Canon, Montana {Dr. F. V. Hoyden). 



C in nam o inu III poly m or p ii iiin, Al. Br. 



Plate XXXVII, Figs. G, 10. 



Cinnamomum polnmorphum, Heer, Fl. Tert. Helv., ii, p. 88, pi. xciii, figs. 25-28 ; xciv, figs. 1-26 ; iii, p. 185. — 

 Ludw., Palaeont., viii, p. 110, pi. xlii, figs. 1-11.— Sap., £t., ii, p. 278; iii, p. 173, pi. v, figs. 

 1-4.— Massal., Senogal., p. 263, pi. vii, figs. 10-13; viii, figs. 5-9, 11, 12, 16, 17 ; xxxviii, fig. ly.— 

 Sism., M^iu.Pal., p. 52, pi. xxiv,fig8. 2-4 ; xxv,fig. 4.— Ett., Bil. Fl., p. 198, pi. xxxiii, figs. 14, 

 15, 17-22. 



Ceanothua poJijmorphus, Al. Br., Stizenb. Verzeich., p. 88. 



Ceanothus subrotundus, Ung., Cblor. Prolog., p. 144, pi. xlix, fig. 7. — O. Web., Palseont., ii, pi. xxiii, fig. 6. 



Daphnogene polymorpha, Ett., Tert. Fl. v. Wien (ex^a)'(e), p. 16, pi. ii, figs. 22-23 ; Foss. Fl. d. Monte Prom., 

 p. 14, pi. vi, figs. 1-8. 



Daphnogme ciiniamomifolia, Ett., Foss. Fl. d. Monte Prom., p. 15, pi. vii, fig. 8. 



Camphora polymorpha, Heer, Fl. Tert. Helv., i, p. 112. 



Phyllites cinnamonieiis, Rossm., Verstein., pi. i, fig. 1. 



Cinnamomum Eossmihsleri, Lesqx., Annual Report, 1872, p. 379. 



Leaves of medium size, varialilo iu form, generally oval, rounded to a short acumen, broadly 

 cuneate to the petiole ; lateral nerves thick, branching outside, joining near the borders the divisions of 

 the midrib. 



As seen by the quotation of Heer's figures in Report {loc. cit.), the 

 reference was made by error of names, for the characters of these two leaves 

 relate them distinctly to C. polymorphutn or perhaps to C. affine. The leaves 

 of C. polymorphum are comparatively broader, abruptly narrowed into a sharp 

 acumen; the branches of the lateral nerves are more numerous, at a more 

 open angle of divergence, general!}' joined by fibrillae to nervilles in right 

 angle to the borders. In the leaves which I refer to this species, the surface 

 is coarser, cut by deeper nervilles, the midrib more divided than in C. offine. 

 But the essential characters of C. polijmor'phum are not sufficiently distinct 

 upon our specimens, none of them having the upper part of the leaves or 

 the acumen preserved, and the areolation and fibrillag of the borders being 

 obsolete. Therefore, we may have, in the two leaves referred here to C 

 polymorphum, mere varieties of C. offine, and thus it may be that all the Ameri- 

 can Cinnafnotnum leaves represent only one species. For this reason, I have 

 omitted the numerous references to European authors for C. Scheuchzeri, 

 described as it is above from too obscure specimens. 



Habitat. — Golden, Colorado. 



