484 MINNESOTA BOTANICAL STUDIES. 



radical leaves broader, less divided ; upper leaves with lobes 

 1-2 inches long : sepals nearly glabrous : akenes broadly oval 

 or obovate. Mountains of Wyoming, Idaho, Colorado. 



46. R. saxicolaRvDB., Mem. N. Y. Bot. Gard. i : 164. 1900. 

 Allied to R. Suksdorfii; differs slightly in the form of the 



lower leaves, which are often more reniform-flabellate : akenes 

 pubescent : head of fruit oblong. Cedar mountain and Mill 

 Creek, Montana, Yellowstone Park. 



47. R. Suksdorfii GRAY, Proc. Am. Acad. 21 : 371. 1886. 

 Roots fibrous : stems slender, 3 to 6 inches high, glabrous : 



radical and lowest stem leaves small, about 6 to 8 lines long, 

 subreniform to broadly flabelliform with truncate base, deeply 

 3~5-cleft or parted ; divisons cuneate, again 3~5-cleft or in- 

 cised ; upper stem leaves with linear divisions: flowers i to 3, 

 deep yellow ; petals round obovate, retuse, 4 to 6 lines long : 

 akenes turgid-lenticular, sharp-edged, glabrous ; style persistent 

 for a time, slender, ^ line long, equalling the akene body : 

 head of fruit, globular. July to Aug. Damp places, 6,000 to 

 8,000 feet alt. Olympic mountains, Mt. Rainier, Mt. Adams 

 east to the Blue mountains, Oregon and into Montana. Cul- 

 tivated. 



48. R. ovalis RAF. Proc. Dec. 36. 1814. 



R. rhomboideus GOLDIE, Edin. Phil. Journ. 6: 329. t. n. 



f. i. 1822. 



R. brevicaulis HOOK. Fl. i : 13. t. 7. 1829. 

 R. auricomus var. Cassubicus E. MEYER PI. Labr. 96. 



1830. 



Pubescent, 3 to 15 inches high: radical and lower leaves 

 roundish to ovate-oblong, crenate, or slightly lobed, base trun- 

 cate or cuneate, petioled, 3~7-divided, lobes linear or oblong : 

 petals yellow, narrow, 3 to 6 lines long ; sepals much shorter : 

 akenes oval, minutely beaked: head of fruit globose. Wis- 

 consin and northern Illinois, north to Labrador and the North- 

 west Territory. 



49. R. Arizonicus LEMMON ex Gray, Proc. Am. Acad. 21 : 

 370. 1886. 



R. affinis TORR, Bot. Mex. Bound. 29. 1858. (In part.) 



Roots fascicled, somewhat thickened : plant glabrous or with 



soft-villous hairs below, 6 to 12 inches high: radical leaves 



