24 RANUNCULACEiE. Ranunculus. 



oblong-obovate or cuneiform, pinnatifidly lobed ; calyx spreading, villous, half 

 the length of the petals; heads subglobose; carpels orbicular, tumid; style sub- 

 ulate, somewhat curved, nearly as long as the carpels.— Mu/i/. / cat. p. 56 ; 

 VC.prodr. 1. p. 40; Bigel. fl. Host. ed. 2. p. 226; Hook. fl. Bor.-Am. 1. 

 p. 20. t. 8. / 1 ; JJarlingt. ! ji. Cest. p. 329. 



Rocky woods, &c. Canada! to Pennsylvania! and Wisconsin! April-May. 

 — Root fascicled. Leaves variously divided, but the middle lobe always 

 petioled. Petals obovate or oblong (5-6-7 Hook.). Flowers as large as in 

 R. acris. Carpels glabrous, scarcely margined, minutely punctate, abruptly 

 terminated by a slender curved or nearly straight style (in our specimens), 

 or margined, the margin tapering upward into a recm'ved filiform style, 

 which is fiat and membranaceous at the base (Ilook.). — We have not seen 

 the carpels as they are described by Hooker; — nor is the style more than 

 slightly curved as represented in his figure. 



37. R. Schlechtetidalii (Hook.): pilose with spreading hairs ; stem some- 

 what branching, short; leaves on long petioles, reniform-cordate, 3-parted; 

 lobes obovate, 3-cleft or laciniately divided; sepals- pUose, spreading, at 

 length reflexed, shorter than the petals ; style as long as the ovary. Hook, 

 fi. Bor.-Am. 1. p. 11. R. fascicularis, Schlecht. animad. hot. 2. p. 30. t. 2. 

 (Me Hook.) 



Rocky Mountains, lai. 52°-55°. — A span high. Leaves somewhat hirsute, 

 ciliate, all except the uppermost cordate or reniform. Petals obovate. 

 Fruit not seen. Hook. 



38. R. orthorhynchus (Hook.): hairy, with the hairs closely appressed ; 

 stem erect, slender, branching and nearly naked above ; radical leaves petiol- 

 ed, 3-foliolate ; leaflets linearly many-cleft, with white callous points ; calyx 

 reflexed ; carpels semi-ovate, compressed, strongly margined, shorter than the 

 nearly straight style. Hook. fl. Bor.-Am. 1. ^. 21. ^. 9. 



Low lands near rivers, Oregon, Douglas^ Nuttall ! — Stem 1-2 feet high, 

 sparsely hirsute. Leaves ternately pinnatifid, with the leaflets mostly pin- 

 natifidly divided ; segments linear or oblong. Flowers as large as in R. acris. 

 Sepals oval, half the length of the obovate petals. Carpels few and large, 

 glabrous. 



39. R. bulbosus (Linn.): hairy; radical leaves petioled 3-foliolate and 

 somewhat pinnately divided ; leaflets 3-cleft, incisely toothed ; stem erect, 

 bulbous at the base; calyx reflexed, shorter than the sepals; carpels sub- 

 ovate, with a short acute recurved beak. — DC prodr. 1. ji. 41; Michx ! fl. 

 1. p. 321; Pursh, fl. 2. p. 392; Darlingt. fl. Cest. p. 331. 



Fields and pastures; introduced from Europe. May. — Stem about a foot 

 high ; hairs appressed. Leaves variously cut. Peduncles sulcate. Petals 

 sometimes more than 5, deep yeUow, and shining. Carpels in a globose 

 head. — Butter-mps. 



§ 3. Carpels tuherculate or aculeate-hispid. — Echinella, DC. 



40. R. miiricatns (Linn.): leaves petioled, glabrous, somewhat orbicular, 

 mostly 3-lobed, the lobes coarsely toothed; stem sparingly pilose, erect or 

 diffuse ; calyx spreading, shorter than the petals ; carpels tuberculate-acule- 

 ate, margined, terminated by a strong, ensiform, straight or somewhat hook- 

 ed beak.— M/r/(,.r..'.^. 1. p. 321; Pursh, fl. 2. p. 395; Ell.sk. 2. p. 64; 

 Lam,, ill. t. 4:98 ; DC. prodr. (P. Carolinus) 1. p. 42. 



Virginia to Louisiana ! May — July. Introduced '? — Leaves sometimes 

 undivided, sometimes cleft to the base ; floral ones oblong or lanceolate^ 

 entire. Flowers small. Petals obovate, bright yellow. 



