to the Rocky Mountains. 19S 



Obs. This species, so far as I have examined it, is con- 

 stantly monogynous. In many respects it resembles the genus 

 Neillia of Don prod. fl. Nep. 



120. S. discolor, Purshfl. i. p. 342.? DC. prod. ii. 

 p. 545. ? 



Hab. On the Rocky Mountains. 



Obs. Fruticose. Leaves ovate, sublobate and dentate, 

 obtuse, white and sericeous beneath, pale green, and nearly 

 smooth above, tapering at the base into a short petiole, with- 

 out stipules. Flowers small, very numerous, in much branch- 

 ed terminal panicles ; branches of the panicle white-pubescent. 

 Calyx villous ; segments ovate, erect. Stamens about 20 ; 

 filaments inserted on a torus which is adnate to the calyx, ex- 

 cept at the margin. Germens very villous. 



The description which Pursh gives of this species is so 

 short, that it is uncertain whether our plant be identical with 

 his or not. 



121. Dryas octopetala, Lin. Pursh Jl. i. p. 350. DC. 

 prod. ii. p. 550. 



Hab. On the Roc* y Mountains, in latitude 39°. 



Obs. This plant is also found in Canada, and on the 

 White Hills of New-Hampshire. Dr. Richardson collected 

 it in Arctic America. It is a native of the high mountains 

 and northern parts of Europe. I believe it has never before 

 been found in so southern a latitude. 



122. Geum virginianitm, L. Pursh Jl. i. p. 351. DC. 

 prod. ii. p. 551. On the Missouri. /3 ? trilobum, foliis ra- 

 dicalibus trilobis ternatisve. With the preceding. 



123. G. triflorum, Pursh fl. ii. p. 736. Nutt. gen. ii. 

 p. 309. DC. prod. ii. p. 553. Potentilla nivalis, nobis, in 

 Ann. Lye. nat. hist. New-York, i. p. 32. t. 3. f. 1. 



Hab. On the Rocky Mountains. 



Obs. The specimens of this plant which I first examined, 

 were not sufficiently mature for ascertaining its genus satisfac- 



