DESCRIPTIONS OF SPECIES. 12;j 



Aralia (!) quinquepartita Lesq. 



PI. IX, fig. 1. 

 Hayden's Ann. Rept,, 1871 [1872], p. 302; Cret. Fl. (1874), p. 90, PI. XV, fig. 6. 



The possession of a better specimen than that on which Lesquereux 

 based the description of the species, one, in fact, that is nearly entire, 

 prompts the publication of the figure now given. 



Since the appearance of the Cretaceous Flora, Lesquereux has figured 

 and described a number of species of Aralia (Eeport of Dr. F. V. Harden, 

 1874, pp. 348, 349), of which his Aralia concreta and A. tripartita are 

 perhaps only forms of the species under consideration. 



Formation and locality: Cretaceous (Dakota group). Fort Harker, 

 Kansas. 



Aralia triloba Newb. 



PI. XL, figs, i, o. 



Ann. K Y. Lye. Nat. Hist., ol. IX (April, 1868), p. 58; Ills. Cret. and Tert PI 

 (1878), PI. XXV, figs. 4, 5. 



"Leaves pinnate or ternate; lateral leaflets long-oval, rounded, or 

 slightly heart-shaped, and unequal at base, pointed at summit, sharply 

 serrate throughout; nervation pinnate; texture thin; surfaces smooth. 



"Trilobate leaf similar in surface, texture, nervation, and marginal 

 serration, but unequally three-lobed; lobes acute, long-pointed." 



Collected by Dr. F. V. Hayden. 



The character of these leaves is very well shown in the specimens 

 before me. They seem to indicate a species of Aralia, and have a marked 

 resemblance to some of the leaves of our two most common species, A. 

 racemosa and A. nudicaulis. The trilobate leaf is not commonly found in 

 our Aralias, but there is always a tendency to the production of such a 

 form, and I have frequently remarked it in A. racemosa, as it grows at the 

 West. That is, however, a larger and stronger plant than this was. 

 Formation and locality: Tertiary (Eocene?). Fort Clarke, Dakota. 



