Davis : RANUNCULI OF NORTH AMERICA. 469 



7. R. Pennsylvanicus LINN. F. Suppl. 272. 1781. 

 R. Canadcnsis JACQ^. Misc. 2: 343. 1781. 



R. tn'folius MOENCH. Meth. Suppl. 70. 1802. 



R. hispidus PURSH, Fl. 2: 395. 1814. Not Michx. 



R. fascicularis WATS. Bot. King Exp. 9. 1871. 



Plant hirsute or hispid, stout, erect, 8 to 20 inches high, 

 very leafy, but the radical leaves often dying down : leaves 

 petioled, ternately compound ; leaflets well stalked, 3-parted 

 and cleft, much incised and toothed, segments acute : flowers 

 small, yellow, on short peduncles ; petals oblong to obovate, i 

 to 2 lines long ; sepals about the same length, reflexed : re- 

 ceptacle hairy : akenes i line long, oblique or semi-oval, com- 

 pressed, roughened ; beak subulate, stout, short, nearly 

 straight : head of fruit oblong to cylindric. Wet ground, 

 Nova Scotia to Georgia west to Arizona and British Columbia 

 Jacq. Ic. Rar. /. 705. 



8. R. Macounii BRITTON, Trans. N. Y. Acad. Sci. 12 : 3. 



1892. 



R. hispidus HOOK. Fl. I : 19. 1829. Not Michx. 

 R. repens var. hispidus TORR. & GRAY, Fl. i : 658. 



1838. In part. 



Erect or declined, hairy, branching, i to 2 feet long, stems 

 rather few leaved : leaves ternately compound, leaflets usually on 

 slender stalks, crenate, variously cleft and lobed, segments 

 acute : petals yellow, obovate, about 3 lines long ; sepals shorter, 

 often reflexed, falling early : akenes smooth ; beak subulate, 

 flat, short and sharp : head oblong or oval. Moist places, 

 western Ontario to British Columbia south to Iowa, and in 

 mountains to Arizona. 



Var. Oreganus n. var. 

 R. hispidus var. Oreganus GRAY, Proc. Am. Acad. 21 : 



376. 1886. 

 R. Oreganus HOWELL, Fl. N. W. Am. i : 19. 1897. 



Plant often taller, smoothish or with scattered hairs : flowers 

 often larger. Shaded wet grounds, Willamette valley, Ore., 

 to Frazer valley, east to Kootenai lake, Brit. Col. 



9. R. Sardous CRANTZ, Stirp. Austr. 2: 84. 1763. 

 R. parvulus LINN. Mant. 1 : 79. 1767. 



R. Philonotis EHRH. Beitr. 2: 145. 1788. 

 R. hirsutus CURT. Fl. Lond. 2: t. 40. 1821. 



