MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 163 



* Ranunculus alismellus (Gray) Greene, Fl. Fran. 297 ; Ranunculus 



alisinacfoliiis alismellus Gray, Proc. Am. Acad. 7: 327 [Syn. 



Fl. i^: 27; Bot. Cal. 1:6]. 



Like 7?. alisiiiacfolfus, but more slender ; leaves thin, the lower 

 oblong to ovate ; petals about 6 mm. long. It grows at an altitude 

 of 2000-2500 m. 



Montana: Granite, 1892, /^. Z>. AW^ey; Big Hole, 1880, Watson. 



Yellowstone Park: 1888, Dr. Chas H. Hall. 



* Ranunculus ellipticus Greene, Pittonia, 2 : iio. 



Generally less than i dm. high, with elliptic entire basal leaves, 

 deeply cleft stem leaves, globose heads and short styles. It grows 

 at an altitude of 2000-2500 m. It is nearest related to R. giaber- 

 riinus Hook. 



Montana : Bridger Mts. , June 14, 1897 , Rydbcrg d' Bessey, ^iio ; 

 Bozeman Pass, 1883, Tzveedy, 885 ; GaWatm Co. ^ Mrs. Ifodgman d- 

 Mrs. Alderson; 1892, W. T. Shazu ; Helena, 1889, F. D. Kelsey ; 

 Unionville, 1892, F. D. Kelsey; Clendenin, 1881, R. S. Williams., 

 166 ; Bozeman Pass, 1883, Scribncr, 4.0; Terminus, 1880, Watson. 



Yellowstone Park: Swan Lake, 1885, Tzveedy, goy ; Mam- 

 moth Hot Springs, 1889, F. W. Dczvart. 



Ranunculus digitatus Hook. Journ. Bot. & Kew Misc. 3 : 124 [Syn. 



Fl. 29; Man. R. M. 8]. 



The roots are fascicled and tuberously thickened. It is a rare 

 plant, growing at an altitude of about 2000 m. 



Yellowstone Park : Mammoth Hot Springs, 1889, F. W. 

 Dezvart: Burg-le/mus. 



* Ranunculus Sabini R. Br. in Parry's ist Voy. Suppl. 264; Rydb. 



Bull. Torr. Bot. Club, 24: 245. 



Related to R. fygmaeus, but has larger flowers and hairy sepals. 

 A very rare plant growing at an altitude of about 3000 m. 



Montana: Long Baldy, Little Belt Mts., 1895, Flodman, 46^. 



* Ranunculus Suksdorfii Gray, Proc. Am. Acad. 21 : 371 [Syn. Fl. 



1': 30]. 



Belongs to the same group as R. Eschscholtzii, but has obovate 

 petals which are 8-12 mm. long, subreniform-flabelliform basal leaves 

 which are deeply divided into obcuneate divisions, and a small globular 

 head of glabrous achenes with slender styles. It is an alpine plant 

 growing at an altitude of 2500-3000 m. 



