200 Plants collected during a journey 



We think it should be called Nuttallia, in honor of the distin- 

 guished botanist who has so accurately described it; for the 

 genera which had hitherto been dedicated to him, are all of 

 doubtful character. 



COMSRETACEiE. 



140. Nyssa biflora, Willd. ? On the Canadian. 



ONAGRARLE. 



141. Gaura mollis, Nutt. mss. Humb. and Bonpl.7 

 Kunth syn. iii. p. 388. ? South-west branches of the Ar- 

 kansa. Leaves lanceolate, entire, clothed with soft hairs. 



142. G. linifolia, Nutt. mss. James in Long's Exped. 

 ii. p. 1 00. On the upper part of the Canadian. A beautiful 

 species, with white flowers. Mr. Nuttall found this plant on 

 the Salt River. 



143. G. coccinea, Nutt. gen. i. p. 249. Purshfl. supp. 

 p. 738. On the Loup Fork, a branch of the Platte. 



144. G. villosa, herbacea; caule superne paniculato, 

 nudo, glaberrimo ; foliis sericeo-villosis, lanceolatis, acutis, 

 remote denticulatis et integerrimis ; petalis obovatis, obtusis; 

 staminibus declinatis ; floribus octandris ; capsulis lineari- 

 oblongis. 



Desc. Stem about three feet high, villous below, smooth and panicu- 

 late above, terete. Leaves about an inch long - , sessile, rather crowded, 

 lanceolate, acute, sericeously villous on both sides ; margin entire, or re- 

 motely and repandly denticulate. Flowers in loose spikes, which termi- 

 nate the branches, small, numerous. Calyx 4-parted. Petals 4, rose-co- 

 lored ? obovate, obtuse. Stamens 8, declined ? Stigma 4-cleft. Capsule 

 quadrangular, linear-oblong 1 . 



Hab. Sources of the Canadian. 



145. G. coccinea, /3? integerrima, multicaulis, canescenti- 

 subvillosa ; caulibus simplicibus ; foliis oblongo-lanceolatis, 



