S6Q ANNIJAL REPORT. 



Only one of the order Lahiake was collected west of the Mis- 

 souri ; this was a species of Hedeoma. 



Three species of Echinospermum^ one Mertensia^ and three spe- 

 cies of Eritrichium, were noted as representing the Borraginacece. 



Phlox ccespitosa, Nutt., is first found in going westward near the 

 Missouri river, but only on the summit of the highest and stoniest 

 hills; farther west it covers the ground nearly everywhere. 



Asclepias Cornuti, Decaisne, was supplanted by A, speciosa, Torr., 

 a closely allied species, rather more handsome though not so tall 

 and robust. 



Among the rarer Chenopodiacem, I collected Monolepis cJienopo- 

 dioides, Moq., Eurotia lanata, Moq., Sarcobatus vermiculatus, Torr. 

 (this only in Pyramid Park), Salicornia herbacea, L., and three or 

 four species of Obione. 



Among the Pohjgonacece, Rumex venosus, Pursh, and several spe- 

 cies of Eriogonum were of frequent occurrence. 



Shepherdia argentea, Nutt., and S. Canadensis, Nutt., commonly 

 called " buffalo-berries," and Ekeagnus argentea, Pursh, the silver- 

 berry, abounded along the streams. 



A low trailing Jutiiperus was exceedingly common west of the 

 Missouri, growing everywhere upon the sides of the dry rocky 

 buttes. 



Allium reticulatum, Fraser, two species of Zygadeniis, Smilacina 

 stellata, Desf., and Calochortus Gunnisoni, Watson, this last not 

 extending east of Pyramid Park, and Yucca angustifolia, Pursh, 

 make up the list oiLiliacem noted in western Dakota. 

 ' Scirpus maritimus, L., was common around alkaline ponds, to- 

 gether with several undetermined species of Eleocharis. Num- 

 erous Carices were observed, mostly differing from Minnesota 

 species. 



The Gramineoe were much more sparingl}'' represented than one 

 would suppose to be the case. West of the Missouri fully half of 

 the grass consisted of a single species, Kmleria cristata, Pers. 

 The remaining half was divided between a dozen other species, 

 such as Aristida purpurea, Nutt., an undetermined Calamagrostis 

 near C. strida, Trin., Stipa Mongolica, Turcz., and S. viridula, 

 Trin., Spartina gracilis, Trin., Brizopyrum spicatum, Hook., 

 Bouteloua kirsuia, Lagasca, and B. oligoskicJuja, Torr., which two 

 last commonly pass by the name of "buffalo grass,'' Munroa squar- 

 rosa, Torr., and Buchloe dactyloides, ^ngelm., the true buffalo grass, 

 the last only occurring in scattered patches here and there. Several 

 species of Poa, Beckmannia erucceformis, Host., Schedonnardus 



