488 MINNESOTA BOTANICAL STUDIES. 



lines long, much exceeding the stamens : akenes oblique, com- 

 pressed, glabrous, rather abruptly joined to the short, persistent 

 style: head of fruit subglobose. September. Near "Los 

 Joares" ; and Santa Rosa, state of Mexico. Altitude, 8,400 feet. 



58. R. adoneus GRAY, Proc. Acad. Phila. 1863: 56. 



JR. amcenus GRAY, Am. Journ. Sci. Ser. 2, 33: 241. 1862. 



Not Ledeb. 

 R. orthorynchus var. alpinus WATS. Bot. King Exp. 9. 



1871. 



Root slender- fibrous : plant shaggy-hairy, 4 to 12 inches high, 

 sometimes becoming decumbent : leaves usually 2-3-times 3- 

 parted and lobed, lobes all narrow-linear, acute; primary di- 

 visions of leaves sessile or nearly so ; petioles of basal leaves 

 membranous in lower part ; stem leaves sessile or on a sheath- 

 ing base, usually borne opposite resembling an involucre : petals 



5 (or 6 to 8), large, yellow, rounded outwardly, cuneate at base, 



6 lines long, much exceeding the lanceolate sepals which are 

 hairy beneath : akenes somewhat compressed, acutish : style 

 long, straight, subulate ; head globular to oblong. Summer. 

 Rockies of Colorado. Altitude 10,000 feet. Cultivated. In- 

 troduced 1881. 



59. R. triternatus GRAY, Proc. Am. Acad. 21 : 370. 1886. 



Roots fascicled, fleshy-fibrous : plant low : leaves often 3- 

 times 3-divided and parted ; leaflets long-petioled, their lobes 

 narrow-linear to linear-spatulate and obtuse : petals yellow, 4 to 

 5 lines long, obovate : akenes turgid, not margined ; beaks 

 slender : receptacles thick : head of fruit globose. Near Golden- 

 dale, S. Wash. 



60. R. Grayi BRITTON, Bull. Torr. Club, 18 : 265. 1891. 

 R. -pedatifidus HOOK. Fl. 1 : 18. /. 18. 1829. Not Smith. 

 R. Hooker i REGEL. Bull. Soc. Nat. Mosc. 34 : 2 : 47. 



1861. NotSchlecht. 

 R. Drummondi GREENE, Erythea, 2: 192. 1894. 



Rather stout, i-2-flowered : basal leaves either biternately 

 or pedately divided and parted into linear oblong or spatulate 

 lobes, main divisions often stalked : stem leaves similar, only i 

 or 2 : petals 3 lines long ; sepals shorter, sparsely and finely 

 villous : akenes each about i line long, borne in a globular head. 

 Lat. 52 to 55, on eastern Rockies, Gray's Peak, Colo., and 

 near Ironton, 12,000 to 13,000 feet. 



