RANUNCULACE^E. 5 



HAB. Wet grounds. From lat. 56 N. to Car. June, July, y . 

 Stem 3 4 feet high, branching. Leaves extremely variable in 

 form, deep green above, paler glaucous smooth or pubescent be- 

 neath. Flowers in a compound leafy panicle, greenish. -r-I have 

 quoted the above characters from Dr. Hooker, (Fl. Bor. Amer.) 

 who though doubtful whether this is the T. cornuti of Linnaeus, 

 considers it the plant described under that name by Pursh. And 

 he has retained this as a specific name, in preference to reduc- 

 ing it to a doubtful synonym as De Candolle has done. T. pu- 

 bescens of Pursh only differs from the present plant in the shape 

 of the anthers. 



2. T. dioicum Linn. : very smooth ; leaves decompound ; leafets 

 roundish, cordate, obtusely lobed, glabrous ; flowers dioecious, pani- 

 icled ; filaments filiform ; fruit ovate, striate. T. lavigatum Mich. 



HAB. Banks of streams. Can. to Car. and N. to lat. 67. April. 

 2J.. Stem 1 2 feet high. Flowers white, in a terminal panicle, 



3. T. rugosum Linn. : leaves decompound ; leafets ovate-lanceolate, 

 rugose, veined, obtusely lobed ; flowers dioecious, in panicles ; fila- 

 ments filiform. 



HAB. Swamps. Penn. to Car. June Aug. It. Stem 3 5 feet 

 high. Flowers white. 



4. T. purpurascens Linn. : leaves compound, shorter than the stem ; 

 leafets roundish, 3-cleft, and incised, glaucous beneath ; panicles near- 

 ly leafless, contracted ; flowers monoecious or dioecious, cernuous ; fil- 

 aments coloured. 



HAB. Dry hills. Can. to Virg. May, June. U> Plant small. 

 Stamens and filaments purple. This is perhaps only T. dioicum 

 with purple flowers. 



** Stamens shorter ilian thepetaloid calyx. 



5. T. anemonoides Mich, : root tuberous ; radical leaves biternate ; leaf- 

 ets subcordate, 3-toothed ; floral leaves petioled, resembling an invo- 

 lucre ; flowers perfect, few, umbelled ; petaloid calyx 8 10 leaved. 

 Anemone, thalictroides Linn. 



HAB. Woods. Common throughout the U, S. April, May. 

 If. Stem 68 inches high. Flowers white. The flowers of 

 this species resembles those of Anemone, but the fruit that of 

 Thalictrum. It is retained in this place by De Candolle and 

 Hooker. Rue leaved Anemone. 



3. ANEMONE. Linn. 



-, >-.. . 



Involucre remote from the flower, of 3 divided leaves. Ca- 

 lyx petaloid, with 515 sepals. Petals none. 



Polyandria. Polygynia. 



1. A. nemorosa, var. quinque/olh, De Cand. .- leaves ternate ; segments 

 5-parted, incisely dentate, lanceolate, acute ; involucre similar, peti- 

 oled ; stem 1-flowered ; sepals 6, elliptic ; capsules awnless. A. win- 

 yuefolia Linn. 



i * ; 



