VOL. II.] 



CROWFOOT FAMILY. 



77 



12. Ranunculus pedatifidus J. E. Smith. Northern Buttercup. (Fig. 1606.) 



Ranunculus pedatifidus J. E. Smith in Rees' Cyclop. 



no. 72. 1813-16. 

 R. affinis R. Br. in Parry's Voy. App. 265. 1823. 



Erect, 4 / -i2 / high, branching. Basal leaves 

 petioled, broadly ovate or nearly orbicular, about 

 i' broad, obtuse, crenate or often lobed, those 

 of the stem deeply lobed, nearly sessile, the lobes 

 narrow, obtuse; flowers yellow, 6 // -8 // broad, the 

 petals exceeding the spreading pubescent calyx; 

 head of fruit oblong, 3 // -6' / long; achenes oval, 

 tipped with a short beak, often hairy. 



Labrador and Quebec to Alaska, south in the Rocky 

 Mountains to Arizona. Also in northern Asia. Summer. 



Ranunculus pedatifidus cardiophyllus (Hook.) Britton, 



Bull. Torr. Club, 18: 265. 1891. 

 R. cardiophyllus Hook. Fl. Bor. Am. i: 14. 1829. 



Basal leaves broadly ovate or orbicular, crenate or 

 slightly lobed; flowers larger; calyx tome ntose. Lab- 

 rador to British Columbia, south to Quebec, South 

 Dakota and in the Rocky Mountains to Arizona (?). 

 Perhaps a distinct species. 



13. Ranunculus ovalis Raf. Prairie 

 Crowfoot. (Fig. 1607.) 



Ranunculus ovalis Raf. Proc. Dec. 36. 1814. 

 Ranunculus rhomboideus Goldie, Edinb. Phil. 

 Journ. 6: 329. 1822. 



Pubescent, branching, e'-iS' high. Lower 

 and basal leaves oval, oblong, or ovate-oblong, 

 long-petioled, the blade i' in length or more, 

 crenate or slightly lobed, obtuse, the base more 

 or less cuneate; upper cauline leaves sessile or 

 short petioled, deeply divided into 3-7 linear 

 or oblong obtuse lobes; flowers yellow, 9 // -i2 // 

 broad, the petals narrow and much exceeding 

 the calyx; head of fruit spherical; carpels and 

 achenes oval or orbicular, minutely beaked. 



In fields and on prairies, Labrador and Ontario 

 to the Northwest Territory, Illinois and Wiscon- 

 sin. March-May. 



14. Ranunculus Harveyi (A. Gray) 



Britton. Harvey's Buttercup. 



(Fig. 1608.) 



Ranunculus aborlivitsvar. Harvevi A. Gray, Proc. 



Am. Acad. 21: 372. 1886. 

 Ranunculus Harveyi Britton, Mem. Torr. Club, 5: 



159. 1894. 



Glabrous, stem erect, slender, branched, 8'- 

 18' tall. Leaves thiu, the basal and lower ones 

 long-petioled, reniform or suborbicular, ob- 

 tusely crenate or somewhat lobed, 5"-i8" wide, 

 cordate, or some of them truncate at the base, 

 the upper sessile or nearly so, deeply 3-cleft or 

 3-parted into linear or narrowly oblong entire or 

 few-toothed obtuse segments; flowers bright 

 yellow, 6 // ~9 // broad; petals 4-8, oblong, 4 or 5 

 times as long as the reflexed sepals; head of 

 fruit globose, 2" in diameter; achenes oblique, 

 compressed, tipped with a minute straight style. 



On dry hillsides, Missouri and Arkansas. April-May. 



