8 HANUNCULACE^. (CROWFOOT FAMILY.) 



7. B,. reCTlTVatUS, Poir. Hirsute ; leaves all pctiolcd, 3 - 5-lobcd ; the 

 lobes wedge-shaped, sharply toothed ; petals minute, shorter than the calyx ; 

 aehenia in globose heads, pointed with a long and slender recurved beak. — Low 

 grounds. April and May. — Stem 1° - 2° high. 



8. B.. SCeleratus, L. Smooth; leaves 3-parted, with the divisions wedge- 

 shaped, obtusely lobed and toothed ; the uppermost sessile ; petals as long as 

 the calyx ; aehenia in oblong or cylindrical heads, pointless. — Ditches and 

 swamps, Charleston {Elliott). Introduced from Europe. April and May. — Stems 

 thick, 1° high. 



9. R. PennsylvanieUS, L. Hirsute ; leaves tei-nate ; leaflets long-- 

 stalked, 3-parted, the divisions lanceolate, acutely lobed and toothed ; petals 

 shorter than the calyx ; aehenia in oblong heads, pointed with a broad straight 

 beak. — Low grounds in the upper districts. June. — Stem 2° - 3° high. Pe- 

 tioles elongated, very haiiy. 



*+ •"■ Petals much larger than the calyx ; aehenia in globose heads. 



10. E. Purshii, Richardson. Stem floating ; immersed leaves divided 

 into very numerous capillary segments, emersed ones renifomi, 3 - 5-parted, the 

 lobes variously divided ; sepals reflcxed ; aehenia pointed with a, short straight 

 beak. — In Stillwater, North Carolina and northward. May -July. — Stems 

 2° -4° long. 



11. K. repens, L. Smooth or hairy; leaves tcrnate, or the earliest ones 

 3-Iobcd ; leaflets 3-lobed, toothed ; aehenia strongly margined, pointed with the 

 broad and straight or slightly-curved beak ; stems erect or prostrate, often bear- 

 ing long runners. — Rich soil, chiefly in the upper districts. Var. y in the river 

 swamps of the low country. March and April. 



Var. |9. bispidus. Hirsute ; stem erect ; leaves ample ; peduncles long, 

 with the hairs appressed. (R. hispidus, Mx. R. Marilandicus and tomentosus, 

 Poir: the latter a form with softer pubescence.) 



Yar.y. nitidus. Smooth or nearly so; stem prostrate (l°-2°long); 

 leaves and flowers smaller. (R. nitidus, MulU.) 



12. E. palmatUS, Ell. Hirsute with appressed hairs ; leave? small (1' 

 wide), temate or 3-parted, with the divLsions ovate, sparingly toothed, those of the 

 upper leaves lanceolate and entire ; aehenia strongly margined, straight-beaked. 

 (R. Carolinianus, DC.) — Swamps in the pine barrens, Middle Plorida to South 

 Carolina, rare. — April and May. Stems 1° high. 



13. E.. bulbOSUS, L. Hairy ; stem erect (1°- 1,J° high) from a bulb-liko 

 base ; leaves tcrnate ; leaflets 3-parted, with toothed lobes ; those of the upper 

 leaves lanceolate, entire ; flowei-s large (1' wide) ; aehenia pointed with a short 

 recurved beak. — Low grounds in the upper districts. Introduced. May. 



14. E. acris, L. Haiiy; stem tall (2°-3°), branched above; leaves 

 3-paited, the divisions deeply cut into three wedge-shaped or lanceolate, acutely- 

 toothed lobes ; the uppermost 3-partcd, with linear entire lobes ; aehenia pointed 

 with a short recurved beak. — Low waste places, sparingly introduced from 

 Europe. 



