DESCRIPTION OF SPECIES— AKALIACE^. 235 



show merely part of the petiole and the base attenuated, as in fig. 6 of Heer 

 (Joe. cit.). The identification from these fragments cannot be considered as 

 positive. 



Habitat. — Six miles above Spring Canon, Montana {Dr. F. V. Haydev). 



Vaccinlum s-eticiilatnm!, Al. Br. 



Plate LIX, Fig: 6. 



Vacdnium reticulatum, Heer, Fl. Tert. Helv., iii, p. 10, pi. ci, fig. ;iO. 



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

 nerves few, inequidistant. 



This leaf has the form and the secondary nervation of those wRich have 

 been published under this name by 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). 



POLYPETALtE. 



UMBELLIFLOEJ]. 



ARALIACE^. 



ARALIA, Toumef. 



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, from 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. quinquepartita, in the Cretaceous Flora, all from specimens of the 

 Dakota group. Two species of Aralia are described here from the Upper 

 Lignitic Eocene of the Rocky Mountains. One of them, A. affinis, is perhaps 

 only a variety of A. {Platanus) nobilis, from the Miocene of Fort Clarke, 

 Upper Missouri, published 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. 



