24 RANUNCULACE^. Thalictrum. 



fl. Bor.-Am. 1. p. 3. t. 2 ; Torr. <^ Gr. fl. N. Am. 1. p. 38. T. pubescens, Pursh, I. c. 

 T. corynellum and T. revolutum, DC. prod. I. p. 12. T. polygamum, Muhl. cat. p. 56. T, 

 rugosum and Cornuti, Darlingt.fl. Cest. p. 334. 



Stem 3-6 feet high, branching. Leaves very large, alwrays sessile, the divisions of the pe- 

 tiole elongated ; leaflets variable in size, form and pubescence, ovate, elliptical or roundish ; 

 often cordate at the base, but sometimes cuneate ; lateral ones sometimes entire ; the veins 

 either scarcely prominent, or elevated and rugose ; margin commonly revolute. Panicle com- 

 pound, loose. Sepals greenish-white, oblong, much shorter than the stamens. Ovaries 

 about 12, styles short ; stigmas thick, pubescent. Carpels about 3 lines long, slightly stipi- 

 tate, beaked with the persistent style. 



A common tall plant in wet meadows, varying in its foliage according to the degree of 

 exposure and shade. Fl. July - August. Fr. September. 



tt Sepals somewhat persistent, longer than the stamens: rootgrwmous. — (Syndesmon, Hoffmannsegg.) 



3. Thalictrum anemonoides, Linn. Rtie Anemone. 



Root fasciculately tuberous ; flowers few, large, umbellate ; floral leaves resembling an in- 

 volucre; radical ones biternate. — Michx.fl.l.p. 322; DC. prod. 1. p. 15; Juss.ann.mus.3. 

 p. 249. ^ 31. /. 2 ; Hook. fl. Bor.-Am. 1. p. 4 ; Darlingt. fl. Cest. p. 333 ; Torr. ^ Gr. 

 fl. N. Am. I. p. 39 ; Brit. fl. gard. (2. ser.) t. 150. Anemone thalictroides, Linn. ; Pursh, 

 fl. 2. p. 387 ; Willd. hort. Berol. 1. <. 44 ; Bigel. fl. Bost. p. 233 ; Bart. fl. Am. Sept. 2. 

 t. 44 ; Bot. mag. t. 866, 



Root composed of several club-shaped fleshy tubers. Stems or scapes 4-8 inches high, 

 commonly several from one root. Radical leaves on long slender petioles ; cauline ones 1-3, 

 verticillate, sessile, trifoliolate ; leaflets petiolulate, roundish, obtusely 3 - 5-lobed. Pedun- 

 cles 3-6, one-flowered, 1-2 inches long. Flowers nearly an inch in diameter, the central 

 one (the first that expands) commonly larger than the others. Sepals 6 - 10, elliptical, white, 

 sometimes slightly tinged with purple, twice as long as the stamens. Filaments fiUform, or 

 somewhat clavate : anthers oblong. Ovaries 6 - 10 : style none : stigma simple. Carpels 

 oblong, acute, prominently ribbed, slightly stipitate. 



Common in most parts of the State, in open woods, but rather scarce in the western coun- 

 ties. It begins to flower in the latter part of April, and continues till June. Although so 

 strongly resembling Anemone in its flower, the fruit shows that its true place is in the genus 

 Thalictrum. 



