RANUNCULACEJ5. 



arranged in a globose or cylindrical head. — Herbaceous an- 

 nual or perennial plants. Leaves mostly radical, though 

 cauline at the base. Flowers solitary or someivhat corymbed } 

 yellow } rarely white. 



* !'• tals ivJ.ile, claws ydlow ; caiptls transversely rugose-striate. 



1. 11. AQUATiLis, L. White Wafer Crowfoot. 



Stem flouting, filiform ; kaves all submersed, divided into capillary diverging seg- 

 meuts; petals otovate, longer than the calyx. 



Is and flowing water. June — August. Rather rare. Stem 1 to 2 feet high, 

 ■lender, weak, round, smooth, jointed. Leaves dichotomously divided into numer- 

 ous hair-like segments, roundish in outline, and J^to 1 inch in diameter. Flowers 

 small, white or yellowish, 



** Flowers yellowy kaves undivided: carpels smootii, ovate, collected into a round- 

 ish head : pei t 



2. K. Flammula, L. Spcancort. 



Stem declinate ; leaves smooth, linear-lanceolate or ovate-lanceolate, subentire, 

 lower ones petiolate, upj;er ones nearly sessile; peduncles opposite to the leaves. 



Ditches and swamps. July — Sept. Stem 1 to 2 feet long, more or less decumbent, 

 rooting at the lower joints. Leaves 3 to 0' inches in lengUi, ^ to 1 inch wide, entire 

 or wi. ; . thickened at the acute summit, i b veers solitary, of a golflen 



yellow color, on peduncles 2 to 3 inches long. "Whole plant yellowish green. 



3. R. REPTANS, L. Creeping Crowfoot. 



r creeping, slender, jointed ; joints 1-flowered. Leaves linear or lanceolate, 

 entire, lower ones tapering into petioles. 



Gravelly cr muddy banks of rivers and ponds: common. June — August. A 

 feiender, delicate species. Stem 6 to 12 inches long, round, rccting at the joints. 

 Leaves fleshy }/ 2 to 1 inch long, mostly nanow anu\.cute at one end. Flowers yel- 

 low, small, boifie en axillary peduncles, Fruit very smooth. 



4. R. PUSILLUS, Poir. Puny Crowfoot. 



Stan slender, erect, or decumbent; leaves pctioled; lower ones ovate, roundish, 

 or subcordate. entire and sparingly toothed; upper ones linear-lanceolate, obscure- 

 ly toothed, scarcely pctioled; pedicels opposite to the leaves, solitary 1-flowered; 

 carpels smooth, with a minute, blunt point. 



Wet grounds. June — August. Ftems 6 to 12 inches high, branched. Flcwcrs 

 small, \ ale-yellow, on long peduncles. Felals 1 to 6, often 3, scarcely longer than 

 the calyx. Stamens 5 to lu. 



*** Leaies divdd. 



5. E. abortious, L. Small-flcwercd Crowfoot. 



Smooth ; stim simple or branching ; radical leaves, petiolate, cordate-orbiculate, 

 crenatc, sometimes 3-partcd; siem-leavcs tcrnate, 3 to 5 cleft, with linear-oblong 

 nearly entire segments ; upper ones sessile"; sepals longer than the petals, reflexed; 

 carpels in a globular head, tipped with a very t hc.it recurved beak. 



Woods and wet grounds. May and June. Per. Stem a foot high, simple or 

 branching, tmocth. Leaves variously dissected, mestly smooth, % to 1}^ in. in 

 diameter, on petioles 3 to 5 inches long; lower ones pedate. FUwers small, yellow. 



6. K. SCELERATUS, L. Celery '-leaved Crowfoot. 



Smooth; stem, branched; lower leaves 3-partcd, segments lobed, pctioled; stem- 



L* 



