LIST OF THE PLANTS COLLECTED 45 



168 Lychnis Drummondii Wats. Cockle. 



Occasional along Antelope Creek near Rabbit Butte, Perkins 



County.) 

 *i6o, Paronychia scsselifolia Xutt.? 



Abundant in gravelly soil -in the drier parts of the steppe. 



Grows in compact clumps from a strong root. 



170 Saponaria -laccaria L. Cockle. 

 Occasionally introduced into fields. 



171 Silenc sp. 



Occasional on gravelly foothills of the buttes. 



34. RAXUXCULACEAE (Buttercup Family) 



172 Anemone cylindrica Gray. 



Xot rare, on the steppe and the swales of the foothills. 



173 Batrachinm trichophylhtm ( Chaix.) Bossch. Floating Butter- 



cup. 



Locally abundant, submerged, in water holes of streams on 

 steppe. 

 *I74 Clematis occidentals Homem. 



Widespread especially in boxelder groves. 



175 Halerpestes cymbalaria (Pursh) Greene. 



Abundant on the wet flats of the floodplains of streams on 

 the plains. 



176 Pulsatilla hirsittissima (Pursh) Brit? Pasque Flower. 

 Fairly abundant, but inconspicuous in summer. The unusual 

 event of finding pasque flowers in full bloom on August 26, 

 1910, was probably associated with the drought of the early 

 part of the year. Specimens sent Professor Xelson were re- 

 ported not to be typical. 



177 Ranunculus abortions L. 



Tolerably common on springy ground in the buttes. 

 [Ranunculus o-ralis Rat. 



Reported by Fromme.] 

 *I78 Ranunculus crcmogencs Greene. 



Uncommon along brooks in the fores: reserves. 



179 Ranunculus pcnnsyh'anicus L. 



Xot uncommon in the shaded valleys of the Slim Buttes. 



180 Ranunculus Macounii Brit. 



Rare along brooks in the Short Pines. 



