55 



S MIL ACE JE. 



207. Smilax herbaeea Linn. Fort Rice, June 15th. 

 207a. Smilax herbaeea Linn., var. pulvurulenta Miehx. 



Near the Great Bend of Heart River, June 24th. 



CYFERACE^E. 



208. Scirpus validus Vahl. Crossing of the Big Muddy, 

 June 30th. 



209. Carex longirostris Torr. Fort Rice, June 15th. 



GRAMLNACE^E. 



210. Calamagrostis longifolius Hook. Valley of the Mus- 

 selshell, August 21st. 



211. Stipa viridula Trin. Near Great Bend of Heart River, 

 June 23d. 



212. Stipa spartea Trin. Near Great Bend of Heart River, 

 June 23d. 



213. Spartina eyanosuroides Wild. Valley of the Yel- 

 lowstone, near the mouth of the Big Horn, August 12th. 



214. Boilteloua curtipendula Gray. Bad Route Creek, 

 July 28th. 



215. Bouteloua oligostaehya Torr. Bad Route Creek, 

 July 28th. 



216. Koeleria cristata Pers. 



217. Poa seratina Ehrhart. Fort Rice, June 15th. 



218. Poa tenuifolia Nutt. Fort Rice, June 15th. 



219. Tritieum repens Linn. Valley of the Musselshell, 

 August 21st. 



220. Hordeum jubatum Linn. 



221. Elymus eondensatus Presl. Valley of the Mussel- 

 shell, August 21 st. 



EQUISETACE.E. 



222. Equisetlim arvense Linn. Fort Rice, June 15th. 



FILICES-. 



223. Woodsia Oregona D. C. Eaton. Near crossing of the 

 Little Missouri, July 1 1 th. Very rare ; met with but a few times. 



