DESCRIPTION OF SPECIES— AKALIAGEJ3. 235 



sliow merely part of (lie petiole and the base attenuated, as in fig. G of Hecr 

 (Joe. cit.). The idenlKicafion from these fragments eamiot be considered as 

 positive. 



Habitat. — Six miles above Spring Canon, jMontana {Dr. F. V. Ilaijden). 



Vavciiiiiiiii !-cticiilatnni?, Al. Br. 



Plato LIX, Fig. G. 

 Vaccinium rcticulatvm, Heer, Fl. Tert. Helv., iii, p. 10, pi. ci, fig. ;!0. 



Leaves small, subcoriaceous, very entire, oval or obovate, obtuse, narrowed to the base; lateral 

 nerves few, incqiiiilistant. 



TIlis leaf has the form and llie secondary nervation of those which iiavc 

 been pnbHshed under this name hy Heer. The reticulation is, however, 

 obsolete, and, as it is distinct upon all the specimens figured by the author, 

 the identification of this leaf is uncertain. 



Habitat.— Near Florissant, Colorado {Prof. E. J). Cope) . 



POLYPETALiE. 



UMBELLIFLOEJ]]. 



ARALIACEJ::. 



ARALIA, Tournef. 



The genus is represented by well-defined and numerous leaves in the 

 Cretaceous of Europe, and especially in that of the Dakota group of North 

 America. Prof. Heer has a species, A. formom, froni the Cretaceous of 

 Moletin, and, besides the numerous forms which I originally referred to 

 Sassafras, and which are considered by Saporta as rather referable to Aralia 

 (three species of which are described in the Annual Report, 1874, as Arali- 

 opsis), I have, in the same Report, figured four new species of this genus, and 

 one, A. quinquepartifa, in the Cretaceous Flora, all from specimens of the 

 Dakota group. Two species of ^7-«/<rt are described herefrom the Upper 

 Lignitic Eocene of the Rocky Mountains. One of them, A. qffi/iis, is perhaps 

 only a variety of A. {Plafanu.s) nohilis, from the Miocene of Fort Clarke, 

 Upper Missouri, jjublished by Dr. Newberry, who has also, from the same 

 formation, an A. triloba. Higher in the Pliocene of California, three fine 

 species have been found also, all like the former of the section of the pal- 

 mately lobed leaves of this genus. The Tertiary of Europe has, in its lower 

 divisions, from the Eocene of Sezanne to the Lower Miocene, of France. 



