232 DESCRIPTION OF SPECIES. 



AKALIACE^E. 



ARALIA, Tourn. 

 "U. S. Geol. Rep.," vii, p. 235. 



Aralia acerifolia, sp. nov. 

 Plate XLIX, Fig. 5. 



Leaves small, palmately threelobed, broadly rounded at base; lobes oblong, 

 enlarged in the middle, gradually narrowed to the obtuse sinuses, contracted above 

 and lanceolate to a blunt point, entire; primary nerves comparatively strong; lower 

 secondary nerves at right angles, the upper very open and curved in passing toward 

 the borders, camptodrome. 



By its nervation this small leaf is closely related to Aralia angustiloba 

 of the "Auriferous Deposits*' of the Sierra Nevada, pi. v, fig. 4, and 

 identical to the leaf figured in this volume, pi. xlv B, fig. 1. 



Hab. — Bad Lands, Dakota. Professor Wm. Denton. 



Aralia notata, Lesqx. 



"U. S. Geol. Rep.," vii. p. 2:37, pi. xxxix, figs. 2-4. 



There are some fine specimens of this species in the collection of 

 Professor Winchell; one especially, a large, entirely preserved three-lobed 

 leaf, with lobes short, deltoid-pointed, lateral nerves close, camptodrome. 

 Other fragments of a still larger leaf have the lobes longer and much 

 larger, ovate-lanceolate, acuminate; the borders minutely dentate, the 

 nervation craspedodrome, the primary nerves flat and broader, exactly 

 representing Aralia fPlatanusJ nobilis of Newberry. These specimens are 

 of different localities; the first, on coarse yellowish-gray sandstone. It is 

 the only one of that compound. The second, upon a half-burnt red shale, 

 is on the same kind of material as most of the species of the collection by 

 Professor Winchell. It is, therefore, not possible to say whether both 

 forms represent a single species with variety, or whether they belong to 

 two different species. A specimen of Aralia fPlatanusJ nobilis, Newby., 

 has lately been sent to me from Golden. Both forms have a wide range 

 of distribution. 



