482 MINNESOTA BOTANICAL STUDIES. 
41. R. McCallai n. sp. 
Stem erect, slender, 12 to 20 inches high, branched toward 
the top, somewhat pubescent: radical leaves hairy, on slender 
hairy peduncles 2 to 4 inches long; blade 3—5-parted nearly or 
quite to the base, segments less than 1 inch long, cuneate, di- 
vergent, cleft into 2 to 3 linear lobes; stem leaves none or bract- 
like, subtending the branches, or a small one near the middle: 
flowers 2 to 6, large, yellow; petals 5, obovate, entire or obcor- 
date; sepals shorter, spreading, hairy: carpels ovate in a glo- 
bose head; styles subulate, hooked: receptacle glabrous. Col- 
lected by W. A. McCalla (2113) near Banff, Alberta, Canada, 
July, 1899, in wet meadows. Differs from #. acres in its 
leaves, usually naked stem, etc. 
42. R. pedatifidus J. E. Smita in Rees’ Cycl. INowgjgs 
1813-16. 
FR. arcticus RicHarps. in Frankl. 1st Journ. 1 ed. App. 
TAD Toe: 
fF. afinis R. Br. Parry 1st Voy. App. 265. 1824. 
R. amenus LEDEB. Fl. Alt. 2: 320. 1830. 
Fe auricomus THoox.'f. Are. Pl..283, 352. 1862; 
Plant sparsely hairy, 3 to 15 inches high, slender, sometimes 
branched: radical and lower stem leaves petioled, broadly 
ovate, crenate, toothed, lobed, or cleft nearly to the base into 
segments which are often narrow; upper stem leaves deeply 
cleft, nearly sessile, lobes narrow: petals yellow, 3 to 4 lines 
long; sepals shorter, pubescent beneath: akenes often hairy, 
with short beak: head oblong to cylindric. Quebec to Arctic 
regions, west to Alaska; Rockies to Colorado and Arizona. 
edeb. Tez.) 173. 
Var. cardiophyllus Britton, Bull. Torr. Club, 18: 265. 
1891. 
fe. cardiophyllus Hoox. Fl. 1: 14, and vars. ¢. 6. 1829. 
LP. afinis var. lasiocarpus Torr. Bot. Wilkes Exp. 213. 
1854. 
FP. afinis var. lecocarpus Traut. ex Midden. Reise in 
Sibir. 62. 1856. 
Le. afints var. cardiophyllus Gray, Proc. Am. Acad. Phil. 
1863: 56. 
Lf. afinis var. validus Gray, Proc. Am. Acad. 21: 371. 
1886. ; 
