7 6 



RANUNCULACEAE. 



[VOL. II. 



Ranunculus reptans intermedius (Hook.) T. & G. Fl. N. A. i: 16. 1838. 

 Ranunculus Flammula var. intermedius Hook. Fl. Bor. Am. i: n. 1829. 



Larger; leaves longer and wider, 3' -5' long, z"-^" wide. Newfoundland to the shores of the 

 Great Lakes, and Oregon. The European R. Flammula has not been found in America. 



Ranunculus obtusiusculus Raf. Water Plantain Spearwort. (Fig. 1603.) 



Ranunculus obtusiuscitlus Raf. Med. 

 Rep. (II.) 5: 359. 1808. 



Ranunculus alismaefolius A. Gray, 

 Man. Ed. 5, 41. 1867. Not Geyer, 1848. 



Ranunculus ambigens S. Wats. Bibliog. 

 Index, i: 16. 1878. 



Stout, i-3 high, ascending, gla- 

 brous, rooting from the lower nodes; 

 stem hollow, sometimes nearly i' thick 

 at the base. Leaves lanceolate or ob- 

 long-lanceolate, 3 '-6' long, 5 // -i2 // ' 

 wide, denticulate or entire, all but the 

 uppermost on broad petioles, which 

 clasp the stem by a broad base; flowers 

 yellow, panicled, 6 // -8 // broad; petals 

 5-7. much exceeding the sepals; head 

 of fruit globose or slightly elongated, 

 5 // -6 // in diameter; achenes com- 

 pressed, W long, subulate-beaked, 

 but the beak early deciduous. 



M.ushes, Maine and Ontario to Geor- 

 gia, west to Minmsotii and Missouri. 

 June-Aug. 



10. Ranunculus nivalis L,. Snow 

 Buttercup. (Fig. 1604.) 



Ranunculus nivalis L. Sp. PI. 553. 1753. 



Stem simple, 4'- 12' high. Basal leaves long- 

 petioled, 3~7-lobed, or crcnate, thick, glabrous, 

 the blade about i' broad, those of the stem 

 short- petioled or sessile, deeply lobed; flowers 

 solitary, 6 // ~9 // broad, white or light yellow; 

 calyx nearly half the length of the petals, 

 densely black or brown hairy all over, as is the 

 upper part of the peduncle; head of fruit oblong, 

 6" long; achenes tipped with the subulate style. 



Labrador and arctic America generally; also in 

 northern Europe and Asia. Summer. 



n. Ranunculus pygmaeus Wahl. Pigmy 

 Buttercup. (Fig. 1605.) 



Ranunculus pygmaeus Wahl. Fl. Lapp. 157. 1812. 



Small, i / -2 / high, glabrous or sparsely pubescent. 

 Basal leaves slender-petioled, deeply 3~5-lobed or di- 

 vided, the blade 3 // -6 // wide; those of the stem similar 

 and nearly sessile; flowers yellow, 2 // ~3 // wide, the 

 petals slightly exceeding the sepals; head of fruit short- 

 oblong, 2" long; achenes _j" long, lenticular, tipped 

 with a slender beak. 



Labrador, arctic America, and in the Rocky Mountains. 

 Also in Europe and Asia. 



