to the Rocky Mountains. 201 



integerrimis, acutiusculis, basi angustatis ; racemis laxis, pau- 

 cifloris ; petalis ovatis, obtusis, unguibus angustissimis. 

 Hab. About the sources of the Canadian. U 

 Obs. This is perhaps a new species, though it strongly 

 resembles G. coccinea of Nuttall. It may be considered as a 

 variety of that plant, until it can be re-examined in a living 

 state. 



146. G. parvifolia, caule glabro, superne paniculato ; 

 foliis linearibus, hirsutis, integerrimis ; floribus laxe spicatis ; 

 petalis subrotundis, brevissime unguiculatis ; capsulis ovato- 

 oblongis, utrinque angustatis. 



Desc. Stem suffrulicose ? about a foot and a half high, slender, smooth, 

 paniculately branched above. Leaves scarcely more than half an inch in 

 length, almost subulate, canescently hairy. Flowers in loose spikes, ter- 

 minating the branches, about as large as in G. biennis, scarlet. Petals 

 roundish, with very short claws. Capsules about three lines long, quad- 

 rangular, acute at each end, 1 -seeded. 



Hab. On the Canadian. 



147. GEnothera pinnatifida, Nutt. gen. i. p. 245. non 

 Humb. and Bonpl. CE. albicaulis, Pursh ji. supp. 734. excl. 

 syn. About the Forks of the Platte. 



Obs. Corolla white, slender, two inches long. 



148. CE. albicaulis, Nutt. gen. 1. c. non Pursh. Bar- 

 ren deserts, along the Platte. 



149. CE. biennis, L. Pursh jl. i. p. 261. Base of the 

 Rocky Mountains. Mr. Nuttall found this species as far up 

 the Missouri as Fort Mandan. 



150. CE. macrocakpa, Purshfl. supp. p. 734. CE. alata, 

 Nutt. gen. i. p. 248. On the Canadian. It differs from the 

 ordinary variety in the leaves being perfectly smooth. 



151. CE. serrulata, Nutt. gen. i. p. 246. On the Ca- 

 nadian or Platte. 



06s. The genus CEnothera is very numerous on the west- 

 ern branches of the Mississippi. Five or six species, besides 



