l66 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



* Ranunculus Douglasii Howell, Fl. N. W. Am. i : i8, Mar., 1897 ; 



N. arcuaius Heller, Bull. Torr. Bot. Club, 24: 310, June, 1897 ; 



i?. tcncllus Nutt. :T. & G. Fl. i: 23 [Syn. Fl. i^ : 33], not 



Viviani ; R. Nchoni tencUiis Gray, Proc. Am. Acad. 8: 374 



[Bot. Cal. 1:8]. 



This and also the next differ from R. occidentalis in the small 

 flowers. The stem is slender and glabrous. It grows in wet 

 meadows, at an altitude of 2000-3000 m. 



Montana: Bozeman, 1896, Rlodnian, 4/4; Spanish Basin, 775,' 

 June 26, 1897, Rydbcrg & Bcssey^ 4120 and 4121 ; Bridger Mts.> 

 June 10-17, 4123, 4123, 4124 and 41 2^; Bozeman Pass, 1883, 

 Canby, 10. 



* Ranunculus Lyallii (Gray) ; Ranuncidiis occidentalis Lryallii Gr^iy, 



Proc. Am. Acad. 21: 373; R. tenellus Lyallii Robinson, Syn. 



Fl. i' : 33 : R. Greenei Howell, Fl. N. W. Am. i : 18. 



Very closely related to the preceding and perhaps only a va- 

 riety of it, differing mainly in the stouter hairy stem and broader 

 segments of the leaves ; it grows in similar situations and has about 

 the same range. 



Montana: Spanish Basin, 1896, Flodnian, 4/6 ; July i, 1897, 

 Rydbcrg & Besscy, 4128; Bridger Mts., June 18, 4i2y; Bozeman, 

 1895, Rydbcrg, 26jj ; Lone Mt., 1886, Tzcccdy, 1062; Belt Mts., 

 1886, F. W. Anderson, 12. 



Ranunculus occidentalis Nutt. ; Torr. & Gray, Fl. N. A. i : 22 



[Syn. Fl. i' : 33] ; Ranunculus ^Vclsonii Gray, Proc. Am. Acad. 

 8:^374 [Man. R. M. 8]. 



A low plant, with ascending stems, and large oblong petals almost 

 twice as large as the sepals. Very rare in the region. 



Montana: Elk Mts., near Black Hawk, 1896, Flodnian, 4yj. 

 Yellowstone Park: 1883, Miss Mary Conipton. 



* Ranunculus Montanensis. 



Stem stout, from fascicled fibrous roots, 3-5 dm. high, sparingly 

 silky hirsute. Basal leaves silky hirsute all over, ternate, the di- 

 visions again divided or cleft into linear or lanceolate segments ; the 

 hirsute petioles i dm. or more long; stem leaves similar, but 

 short-petioled ; flowers few and very large ; sepals broadly ovate, 

 silky; petals broadh^ obovate, 7-10 mm. long; head of achenes glo- 

 bose ; styles long, slender, and much curved. 



