(JO DESCRIPTION OF SPECIES. 



Diospyros ambigua, 1 Lesqx. 



Z>. ancepi, Lesqx., "U. S. Geol. Kep.," vi, p. 89, pi. vi, fig. 6. 



Diospyros rot u ml i folia, Lesqx. 

 "U. S. Geol. Rep.," vi, p. 89, pi. xxx, fig. 1. 



ERICACEAE. 



ANDROMEDA, Linn. 



Andromeda Parlatorii, Heer. 

 "Pbyll. Crft. du Neb.," p. 18, pi. i, fig. 5 ; Lesqx., " U. S. Geol. Rep ," vi, p. 88, pi. xxiii, figs. 6, 7 ; xxviii, fig. 15. 



Andromeda affinis, Lesqx. 



Plate II, Fig. 5. 

 Hayden's "Ann. Rep.," 1874, p. 343, pi. iii, fig. 5. 



Leaf thick, narrowly lanceolate, acuminate, entire; medial nerve comparatively 

 thick; lateral veins close, parallel, at an acute angle of divergence, camptodrome. 



The leaf, 5$ centimeters long, 11 millimeters broad in the middle, is 

 gradually narrowed downward to the petiole and upward to a somewhat 

 long acumen; the angle of the lateral nerves is 30°; the areolation is 

 composed of round or quadrate polygonal minute areoles. 



This species is closely allied to the preceding; the veins are less 

 oblique and more curved. 



Hah. — Spring Canon, with fragmentary leaves of A. Parlatorii. Dr. 

 F. V. Hayden. 



ARALIACE^E. 



ARALIA, Linn. 



Aralia formosa, Heer. 



Plate XT, Figs. 3, 4. 

 Heer, "Moletein Fl.," p. 18, pi. viii. fig. 3. 



Leaves petioled, triple-nerved, trilobate; lobes dentate, blunt at the apex. 



This species, as represented by American specimens, though positively 

 identified, presents a few unimportant points of difference. In Heer's 

 figures the base of the leaves is wedge-form and the divisions oblique; 

 in those which I have for examination the middle lobe is oval or lance- 



'The name of this species is changed as preoccupied by Heer. 



