RAXUNCULACE.E. (c'KOWFOOT FAMILY.) 7 



5. R. pusillus, Poir. Stems several, erect, 6' -12' high; lowest leaves 

 ovate or rounded; flowers 2" wide, the 1-5 petals as long as the calyx; 

 achenia obovate, minutely pointed. Miry banks in the upper districts. 

 April - May. Leaves 1' long. Stamens 5-9. 



6. R. oblongifolius, Ell. Stem 1 -2 high; lower leaves oblong; 

 flowers 3" -5" wide; petals longer than the calyx; stamens numerous; 

 achenia globular, pointless. Ditches and wet places in the lower districts. 

 May -July. Rare. 



i -t Leaves (excepting No. 7) ternately lobed or divided, the lowest petioled. 

 H- Petals small, not exceeding the calyx. 



7. R. abortivus, L. Biennial, glabrous, l-l high; lowest leaves 

 broadly cordate, crenate, rarely 3-parted; stem leaves 3-5-parted, the lance- 

 olate lobes toothed or entire ; achenia in globose heads, very short-pointed. 

 Low grounds. April -May. 



8. R. sceleratus, L. Annual, glabrous, |-1| high; lower leaves 

 round-cordate, 3-lobed, obtusely toothed, the upper 3-parted ; acheuia in an 

 oblong or cylindrical head, pointless. Ditches, etc., Charleston (Elliott). 

 Introduced. April - May. 



9. R. recurvatUS, Poir. Hirsute, 1- 2 high; leaves all petioled, cor- 

 date, 3 - 5-lobed or parted, the broad divisions mucronate-toothed or serrate ; 

 achenia in a globose head, pointed with a long and slender recurved beak. 

 Low grounds. June -July. 



10. R. Pennsylvanicus, L. Hirsute, l-2high; leaves teruate, the 

 leaflets stalked, 3-parted, narrowly lobed and toothed ; acheuia in an oblong 

 head, pointed with a broad straight beak. Damp grounds, N. Carolina 

 (Curtis). May -June. 



.H. -H- Petals much larger than the calyx; achenia in a globose head, compressed, 



the margins thickened. 



11. R. multifidus, Pursh. Stem long, floating ; immersed leaves as in 

 No. 1, the floating ones palmately much divided ; achenia pointed with a short 

 straight beak. In shallow ponds, N. Carolina ( Curtis). 



12. R. septentrionalis, Poir. Stem erect or spreading, 1 high, hir- 

 sute ; leaves ternate or 3-parted, the divisions mostly stalked, 3-lobed ; achenia 

 broadly straight-beaked. (R. repens, 1st edition.) Low or wet ground, in 

 the upper districts. April- May. Stem sometimes stoloniferous. 



Var. MarilandiCUS. Densely hirsute with spreading hairs ; leaves 

 mostly ternate, the leaflets ovate or cuneate, 3-lobed. Dry shaded soil in 

 the middle and upper districts. 



Var. nitidus. Smooth, prostrate, l-2 long; leaves trifoliolate ; beak 

 of the achenium slightly curved. River swamps in the lower districts. 

 Early spring. 



13. R. fascicularis, Muhl. Silky pubescent ; stem 5-! high from a 

 cluster of fleshy fibres; leaves ternately or somewhat piunately divided; flow- 

 ers large ; achenia long-beaked. Rocky woods, N. Carolina and Tennessee. 

 March - April. 



