to the Rocky Mountains. 231 



329. Lindernia imlatata, Muhl. Tor.fi. i. p. 14. On 

 the Canadian. 



330. Collinsia verna, Nutt. jour, acctd. Philad. i. p. 

 190. t. 9. Ejusd. gen. ii. p. 46. Common on the Missouri. 

 Mr. Nuttall found another species of this interesting genus on 

 the Arkansa. 



331. Orobanche ltjdoviciana, Nutt. gen. ii. p. 58. 

 Sources of the Canadian. 



332. O. uniflora, L. Purshfl. ii. p. 431. On the Mis- 

 souri. 



LABIATiE. 



333. Salvia trichostemoides, Pursh fi. i. p. 19. On 

 the Missouri. 



334. S. elongata, Kunih syn. ii. p. 79. 



Obs. Our specimens agree accurately with the description 

 of Kunth, except that the calyx is rather pubescent than 

 hairy. Perhaps this is an intermediate species, between S. 

 elongata and S. mexicana. 



335. Teucrium laciniatum, fruticulosum ; foliis pin- 

 nato-quinquepartitis, summis tripartitis ; laciniis linearibus ; 

 floribus axillaribus, solitariis, pedicellatis ; pedicellis folio 

 multo brevioribus. 



Desc. Stem frutescent, branched, smooth. Leaves opposite ; the lower 

 ones pinnately 5-parted, sessile ; segments linear, rather obtuse, nearly 

 smooth, punctate ; upper ones triGd, cuneate at the base. Flowers axil- 

 lary, solitary, on pedicels about 2 lines long, large in proportion to the 

 plant. Calyx subcampanulate, 5-cleft, smooth ; segments lanceolate, 

 acute, the lowest one 2-cleft or 3-toothed. Corolla violet? hairy exter- 

 nally ; segments of the lower lip ovale, acute. Stamens exserted ; anthers 

 roundish. 



Hab. On the Rocky Mountains. 



Obs. The specimen of this plant is only about four inches 

 high, and appears to have been broken off at the root. 



336. Dracocephalum parviflorum, Nutt. gen. ii. p. 

 35. Upper part of the Platte. 



Vol. II. 28 



