Davis: RANUNCULI OF NORTH AMERICA. 483 



R. ajfinis var. micropetalus GREENE, Pitt. 2: no. 1890. 

 R. Arizonicus var. subajfinis GREENE, 1. c. 60. Not Gray. 

 R. inamcenus GREENE, Pitt. 3: 91. 1896. 

 Differs from the type in its stouter habit, radical leaves often 

 cordate at base, usually not much lobed, but variable : flowers 

 larger : akenes either hairy or glabrous. New Mexico and 

 Arizona to Montana, east to Labrador. 

 Var. pinetorum (GREENE). 

 R. cardiophyllus var. pinetorum GREENE, Pitt. 4: 144. 



1900. 



Stem short, canescently villous : roots strongly and copiously 

 developed : leaves oval, often subcordate, or truncate at base, 

 margins crenate : flower i inch across : head of akenes not so 

 long[as in the type, ovoid or globose. Pine woods, Graham's 

 Park, southern Colorado. 7,800 feet. 



43. R. vicinalis GREENE, Pitt. 4: 145. 1900. 



This is an Alaskan plant from the region of Fort Selkirk, 

 which differs from R. pedatifidus in its larger flowers, and in 

 having the radical leaves cleft or parted into about 7 lobes, and 

 these again 3-cleft. But we find this leaf character in some 

 Colorado forms of that type. 



44. R. Eschscholtzii SCHLECHT. Animad. Ranunc. 2 : 16. 

 /. /. 1819. 



R. nivalis var. Eschscholtzii WATS. Bot. King Exp. 8. 

 1871. 



R. ocreatus GREENE, Pitt. 4: 15. 1899. 

 Caudex short, oblique, roots fibrous : plant slightly hairy, 3-8 

 inches high : leaves roundish or broader in outline ; stem leaves 

 3~5-lobed or parted, lobes lanceolate to oblong or linear 

 spatulate ; basal leaves with broader lobes, or lobed like the 

 others : flowers i to 3 ; petals yellow, broadly obovate, some- 

 times slightly crenulate or obcordate, 3 to 6 lines long ; sepals 

 pubescent beneath : akenes lenticular, margined, glabrous ; 

 beak sharp, straight or sometimes recurved : head of fruit ob- 

 long or nearly globose. North Alaska in mountains to south- 

 ern California, east to Colorado. 



45. R. eximius GREENE, Erythea, 3: 19. 1895. 



R. alpeophilus A. NELSON, Bull. Torr. Club, 26: 350. 



1899. 

 Much like R. Eschscholtzii, but often larger, nearly glabrous : 



