Davis: RANUNCULI OF NORTH AMERICA. 485 



oval to oblong, cordate, crenate-dentate ; the later ones often 5- 

 cleft and again 3-5-lobed ; stem leaves i-3-ternate with narrow 

 linear divisions : petals yellow, often 6 to 7, ovate to oblong, 3 

 to 5 lines long : akenes compressed, thin-margined, pubescent : 

 head small, globose. Willow Spring, and mountains of south- 

 ern Arizona. 



Var. subaffinis GRAY, Proc. Am. Acad. 21 : 370. 1886. 



R. Arizonicus GREENE, Pitt. 2 : 60. 1890. 



7?. subsagittatus var. subaffinis GREENE, Pitt. 2: no. 

 1890. 



R. subaffinis RYDB. Bull. Torr. Club, 24: 246. 1897. 



Plant lower than the type, usually i-flowered : akenes densely 

 pubescent, with subulate style nearly their own length : head of 

 fruit oval. High altitudes. Mt. Agassiz, in San Francisco, 

 mountains of Arizona. Also Chihuahua. 



Var. subsagittatus GRAY, Proc. Am. Acad. 21 : 370. 1886. 



Stouter than the above ; villous at least at first : stem simple, 

 few-flowered : radical leaves thick, oblong, bases subcordate to 

 sagittate : petals broader than in the type : head of akenes 

 larger, oval. Wet ground. Northern Arizona to San Fran- 

 cisco mountains. 



50. R. montanus WILLD. Sp. PL 2: 1321. 1799. 



Rootstock creeping, 1-3 inches long, % inch thick : plant 6 

 inches high, pubescent with soft appressed or spreading hairs, 

 especially toward the top : radical leaves few, petiolate, smooth, 

 orbicular in outline, 3-parted, and lobed into blunt, toothed 

 segments ; stem leaves sessile or nearly so, clasping the stem, 

 3~5-parted into narrow somewhat toothed or entire lobes : flow- 

 ers solitary, terminating the simple or once-branched stem, i 

 inch or larger ; sepals concave, acute, yellowish-green, slightly 

 hairy; petals 5, large, broadly obovoid, bright yellow, with 

 small scale and pore at base : akenes turgid, glabrous ; beak 

 strongly hooked, puberulent. May to July. Europe. Culti- 

 vated. Bot. Mag. 3022. Bot. Cab. 1610. 



Var. dentatus BAUMG. Enum. Stirp. Magn. Trans. 2: 124. 



About 1823. 

 R. carpaticus Herbich.* Sel. PL Rar. Galic 15. 1836. 



Leaves much more toothed than in the type : plant much 

 taller: flowers larger. Cultivated. Bot. Mag. 7266. Garden 

 52: 1138- 



