814 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



*264. Bi/plopap'pus umhellatus, T. & G. 



265. JBoltonia glastifoUa, L'Her. 



1873. September. Mouse River. 

 *266. SoUclago Canadensis, L 



267. SoUclago gigantea, Ait. 



1873. July, August. From Pembina to Mouse Eiver. 



1874. August. Milk Eiver. 

 *268. SoUdago Virga-aurea, L. 



269. SoUdago Virga aurea^ L., var. Immilis. 

 1874. August. Eocky Mountains. 

 *270. SoUdago Yirga-aurea, L., var. alpina. 

 271. SoUdago incana, T. & G. 



1874. August. Milk Eiver. 

 *272. SoUdago lanceolata, Ait. 

 *273. SoUdago nemoraUs, Ait. 

 274. SoUdago Missouriensis, Nutt. 



1873. August. Mouse Eiver. 

 *275. SoUdago siricta, Ait. 

 *276. SoUdago serotina, Ait. 

 277. SoUdago rigida, L. 



1873. August. Open prairie. Very abundant. 



1874. August. Milk Eiver. 

 *278. SoUdago temiifoUa, Pursh. 

 *279. Bigelovia graveolens, Gr. 



*280. Bigelovia Howardii, Gr. 

 281. A;plopajppus lanceolatus, T, & G. 

 1874. August. Milk Eiver. 

 *282. Aplopappus NuttalUi, T. & G. 



283. Aplopappus spinulosus, DC. 



1873. August. Mouse Eiver. On very dry plains. Plant 

 about six inches high. 



284. GrindeUa squarrosa, Dunal. 



1873. August. Mouse Eiver. 



1874. August. Frenchman's Creek. 



Very abundant on the plains. Used by the Indians as 

 an anti-syphilitic, in decoction. 



285. Chrysopsis villosa, Nutt. 



1873. August. Dry plains. 



1874. July, August. Prairies along Missouri Eiver. 

 Chrysopsis villosa, Nutt., var. hispida. 



1874. July. Missouri Eiver. 

 *286. Chrysopsis hispida, Hook. 

 *287. Iva axillaris, Pursh. 

 288. Amhrosia psilostachya, DC. 



1873. August. Mouse Eiver. On dry plains. 

 *289. Ambrosia trijida, L., var. integrifolia. 



