to the Rocky Mountains. 209 



Obs. There was but a solitary and imperfect specimen. of 

 this plant. It differs from X. ciliatum in its petioles, which 

 are slender, and pubescent ; and the leaves being scarcely 

 ciliate. The flowers appear to be spiked ; if so, it is rather 

 a species of Caprifolium. 



RUBIACEjE. 



193. Cephalanthus occidentals, L. Willd.sp. pl.i, 

 p. 543. On the Canadian. 



194. MlTCHELLA REPENS, L. Purshfl. \. p. 101 . WUld. 



sp.pl. i. p. 617. On the Arkansa. 



195. Galium circjezans, Mich. fl. i. p. 80. Purshfl. i. 

 p. 104. On the Missouri. 



196. Spermacoce diodina, Mich. fl. i. p. 72. On the 

 Canadian. 



COMPOSITE. 



197. Hieracium marianum, WUld. sp. iii. p. 72. On the 

 Arkansa. 



198. H. runcinatum, hirsutum ; foliis omnibus radicali- 

 bus, elliptico-oblongis, runcinatis; scapo paucifloro ; calyci- 

 bus glanduloso-pilosis. H. runcinatum, James in Long'6 

 exped. i. p. 453. 



Hab. In depressed grassy situations along the Platte. 

 Obs. Plant about a foot high ; flowers small. James. Is 

 it of this genus ? 



199. Troximon glaucum, JVutt. gen. ii. p. 128. Pursh 

 fl. ii. pp. 505 and 742. Spreng. syst. iii. p. 633. Base of 

 the Rocky Mountains. 



200. T. marginatum, Nutl. gen. 1. c. Spreng. 1. c. On 

 the Loup Fork, a branch of the Platte. 



201. Sonchus ludovicianus, Nutt. gen. ii. p. 125. On 

 the Platte. 



