162 



230. Opuntia 3Iissourim.s{s, D. C. Common throughout the upper 



Missouri region. 



231. Oimntia fragilis, Nutt. Peculiar to arid plains, upper Mis- 



souri. 



232. Opiintia. 



233. 3Iamiiialaris vivipara. Seen on the rich bottoms between 



Niobrara and Fort Pierre ', bears beautiful purple blossoms. 



234. Mammalaris Nuitalli, Common throughout the upper Mis- 



souri country above Fort Pierre; most abundant in White 

 river valley. 



235. Rihes Missouriensis, Nutt. Woody limestone banks around 



Council Blufls. 



236. Rihes fioridum, Linn. Common on the upper Missouri and 



valley of Yellow stone. 



237. Rihes aioxum, Pursh. Banks and ravines along Missouri and 



Yellow stone. 



238. Ecldnocystis lohata, Torr. and Gray. Durions' hills on Missouri, 



239. Penthorum sedoides, Itinn. In wet places, Platte valley; mouth 



of Loup Fork. 

 !240. Heuclicra Americana, Linn. Not rare in woody places along 



Missouri. 

 :24L Hamamelis Virginica, Linn. Abundant in limestone Avoods 



along Missouri to mouth of the Platte river. 

 "242. Zizia aurea, Koch. Prairies along Missouri to Big Sioux and 



Niobrara. 



243. Folytaenia NidtaUii, D. C. Dry argillaceous hills and upland 



prairies around Fort Pierre; also on the Yellow stone. 



244. Simn lineare, Michx. Moist places from mouth of Missouri to 



mountains. 



245. Thaspium harhinode, Nutt. Rich woody places along Missouri. 

 .246. Thaspium aiireum, Nutt. Near Council Bluffs. 



:247. Peucedanum fa^nicidaceum, Nutt. Common on high prairies 



around Council Bluffs. 

 l248. Osmorrhiza longistylis, D. C. Moist fertile woods to Fort 



Pierre. 



249. Osmorrhiza hrevisfylis, D. C. With the preceding. 



250. Cicuta inaculata, Linn. Wet places, Platte valley. 



25L Aralia nudicaidis, Linn. Limestone woods to Big Sioux river. 



252. Cornusflorida, Linn. Along the rich wooded bottoms as high 



as Fort Leavenworth. 



253. Cormis stolonifera, Michx. Wooded bottoms of Missouri from 



mouth to source. 



254. Corniis sericea.'Lmw. Abundant along Missouri bottoms. The 



inner bark is much used by the Sioux Lidians with their 

 tobacco in proportions of three to one; called by the traders 

 " red osier." 



