RANUNCULACEJE. (CROWFOOT FAMILY.) 5 



3. ANEMONELLA, Spach. RUE-ANEMONE. 



Habit and flowers of Anemone, with the foliage of Thalictrum. Flowers 

 umbelled. Style none. Achenia few, smooth, oblong, strongly ribbed. 



1. A. thalictroides, Spach. Glabrous, 6' -10' high, from clustered 

 tubers ; leaves ternately compound ; leaflets long-stalked, oval or roundish, 

 cordate, shortly 3 - 5-lobed, of the involucre 6 -9 ; umbel 3 - 6-flowered ; sepds 

 6-10, oblong, white, 4" - 6" long. Dry woods. April - May. 



4. THALICTRUM, Tourn. MEADOW-RUE. 



Sepals 4-5, imbricated in the bud, colored, deciduous. Petals none. Sta- 

 mens numerous. Ovaries 3-15, 1-ovuled. Achenia furrowed or inflated, 

 pointed by the persistent stigma or short style. Seed suspended. Perennial 

 mostly glabous branching herbs, with alternate teruately compound leaves, 

 and mostly dioicious or polygamous small flowers. 



* Flowers duecious or polygamous ; sepals shorter than the stamens; style shaft; 



achenia ribbed. 

 H Leaves 2-3-ternate, petiuled ; leaflets roundish, crenate, glaucous; anthers 



longer than the filaments ; achenia oval or oblony ; pedicels lona, axillary; 



sepals ijreenish ; flowers dioecious. 



1. T. debile, Buckley. Stem prostrate, 6' -12' long, from clustered 

 tubers; pedicels mostly in pairs; stamens 10-15; achenia 1-6, oblong. 

 Rocky woods, mountains of Georgia and Alabama. April -May. 



2. T. dioicum, L. Stem erect, from a fibrous root ; pedicels 2 - 6 in a 

 cluster ; stamens 20 - 30 ; acheuia 4-10, oval, sessile, or rarely stipitate. ( Yar. 

 stipitatum, Torr. $ Gray). Rocky woods, in the upper districts. March - 

 April. 



j- -i Lowest leaves petioled, decompound, the others sessile ; leaflets very vari- 

 able, entire or 3-lobed ; anthers shorter than the filaments ; achenia acute ; 

 floirers panicled. 



3. T. purpurascens, L. Stem 3 -5 high, generally purplish ; leaf- 

 lets ovate or oblong, often cordate, strongly veined, 3-lobed or entire, mostly 

 pubescent beneath ; flowers dioecious, greenish or purplish ; filaments long 

 and drooping, slightly thickened upwards; anthers linear, mucronate. Dry 

 soil in the upper districts. July -August. 



4. T. polygamum, Muhl. Like the last, but taller ; leaflets less strongly 

 veined and thinner ; flowers polygamous, white ; filaments plainly thickened 

 under the short oblong obtuse anthers. Swamps and wet banks. July - 

 August. 



* * Flowers perfect ; stigma sessile ; achenia stipitate, inflated, veiny ; flowers 

 panicled ; leaves petioled, biternate. 



5. T. Clavatum, DC. Stem l-2high, sparingly branched ; leaflets 

 thin, obovate or rounded, 3-lobed ; panicle corymbose ; flowers white ; achenia 

 5-10, scimitar-shaped, short-pointed. (T. nudicaule, Schweinitz.) Moun- 

 tains uf X. Carolina. July. 



