8 RANUNCULACK<«. (c HOW FOOT lAMILY.) 



7. R. recurvatus, Poir. Ilii-sute ; leaves nil petioled, 3 - 5-lol)cd ; the 

 lobes \ved;,'e-sliupf(l, sliurply toothed ; petals minute, shorter tlian the ealyx ; 

 nchcnia in {^lohose heads, pointed with a lon<j and slender recurved lieak. — Low 

 grounds. April and May. — Stem l°-2°!iiyh. 



8. R. SCeleratUS, L. Smooth; leaves 3-parted, witli tlie divisions \vcd<,'C- 

 shaped, ol»tusely lolied and tootlied ; tiie uppermost ses>iie ; petals as lonj^ as 

 the ealyx ; aehenia in oblonj^ or eylindrieal heads, pointless. — Ditelies and 

 s\vain|)s, Charleston {Elliott). Introduced IVoni Europe. April and May. — Stems 

 thick, 1° high. 



9. R. Pennsylvanicus, L. Hirsute ; leaves ternate ; leaflets long- 

 stalked, 3-parted, tlic divisions lanceolate, acutely lobcd and toothed ; petals 

 sliorter than the ealy.x ; aehenia in oblong heads, pointed with a broad straight 

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

 tioles elongated, very hairy. 



*+ *+ Petals much larger titan the calyx : aehenia in (jloliose heads. 



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

 into very numerous capillary segments, cmei-scd ones rcniform, 3 - 5-parted, the 

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

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

 2° -4° long. 



11. R. repens, L. Smooth or liairj' ; leaves ternate, or the earliest ones 

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

 broad and straight or slightly-cun'cd beak ; stems erect or prostrate, often bear- 

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

 swamps of the low country. March and April. 



Var. (9. hispidus. Hirsute; stem erect; leaves ample; peduncles long, 

 with the hairs appresscd. (R. hispidus, ..1/r. R. Marilandieus and tomentosus, 

 Poir: the latter a form with softer pubescence.) 



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

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



12. R. palmatUS, Ell. Hirsute with appresscd hairs ; leaves small (1' 

 wide), ternate or 3-])arted, with the divisions ovate, sparingly toothed, those of the 

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

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

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



13. R. bulbosus, L. Hairy ; stem crcet (1°- 1|° liigh) from a bulb-like 

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

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

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



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

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

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

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

 Europe. 



