FLORA OF THE DAKOTA GROUP. 61 



olate, the lateral linear lanceolate, not enlarged in the middle, as far 

 as seen from the one partly preserved, and the borders are obtusely serrate 

 from near the base. In Heer's figures the medial lobe is shorter and nar- 

 rower, and it is, like the other, denticulate only in the upper part. The 

 secondary veins are not very distinct; a few, of which the base only is 

 seen, are parallel, close, at an open angle of divergence. The leaves are 

 thick; the petiole is not preserved, but as seen in Heer's specimen it is 

 short and thick. 



Heer compares this species for the shape of the lobes to A. Japonica, 

 which, however, has the leaves five-lobed, and indicates its relation to A. 

 primigenia of Mount Bolca and of Alumbay. 



Hab. — Near Morrison, Colorado. H. C. Beckwith. 



Aralia Saportanea, Lesqx. 



Plate VIII, Figs. 1, 2; IX, Figs. 1, 2. 

 Hayden's "Ann. Rep.," 1874, p. 350, pi. 1, fig. 2. 



Leaves large, sub-coriaceous, triple-nerved and five-lobate by division of the 

 lateral nerves, fan-shaped in outline, narrowed in a curve or broadly cuneate, and 

 decurring to a long slender petiole; lobes narrowly lanceolate or linear-lanceolate, 

 acute or blunt at the apex, equally diverging, distantly dentate from below the middle 

 upward; secondary nerves sub-caruptodrome. 



This beautiful species is known by numerous finely preserved speci- 

 mens. The leaves, 9 to 20 centimeters long from the top of the petiole to 

 the summit of the middle lobe, are of the same width between the points 

 of the lower lateral lobes; the petiole is long and comparatively slender, 

 though appearing thick upon one of the specimens, probably enlarged and 

 flattened by compression. The preserved broken part on one of the leaves 

 measures 5 centimeters. The lobes cut down to about two-thirds of the 

 leaves are narrowly lanceolate, slightly narrower near the obtuse sinuses, 

 equally diverging, the lower lateral ones much shorter, curved down, and 

 decurring to the base of the leaves. The leaves, triple-nerved from the 

 division of the primary nerves a little above the base, become five-nerved 

 from the forking of the lateral nerves at a short distance from their base. 

 The secondary veins emerge at an acute angle of 30°, curve in ascending 

 to the borders, and sometimes enter the teeth by their ends; the upper 

 more generally follows close to the borders in festoons, emitting under the 



