Thalictrum thalictroides

(Linnaeus) A. J. Eames & B. Boivin
Bull. Soc. Roy. Bot. Belgique 89: 319. 1957.
Common names: Rue-anemone windflower
EndemicIllustrated
Basionym: Anemone thalictroides Linnaeus Sp. Pl. 1: 542. 1753
Synonyms: Anemonella thalictroides (Linnaeus) Spach Syndesmon thalictroides (Linnaeus) Hoffmannsegg Thalictrum anemonoides Michaux
Treatment appears in FNA Volume 3.

Roots black, tuberous. Stems erect, scapose, 10-30 cm, glabrous. Leaves basal; petiole 10-30 cm. Leaf blade 2×-ternately compound; leaflets widely ovate or obovate to nearly rotund, apically 3-lobed, 8-30 mm wide, surfaces glabrous. Inflorescences umbels or flowers solitary, (1-)3-6-flowered; involucral bracts usually 3-foliolate, petiolate and opposite, or sessile with leaflets appearing to be whorls of 6 petiolate leaves, otherwise similar to basal leaves. Flowers: sepals not caducous, white to pinkish, showy, elliptic to obovate, 5-18 mm, longer than stamens; filaments narrowly clavate, 3-4 mm; anthers 0.4-0.7 mm. Achenes (4-)8-12(-15), short-stipitate; stipe 0.1-0.4 mm; body ovoid to fusiform, 3-4.5 mm, prominently 8-10-veined.


Phenology: Flowering spring (Mar–Jun).
Habitat: Deciduous woods, banks, and thickets
Elevation: 0-300 m

Distribution

V3 227-distribution-map.gif

Ont., Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Mass., Mich., Minn., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.

Discussion

In Thalictrum, T. thalictroides is unique in having umbelliform inflorescences and is therefore easy to identify. Based on this one distinction, many botanists still place it in the genus Anemonella. The leaflets, flowers, and fruits, however, are not unlike those of Thalictrum.

The Cherokee used infusions prepared from the roots of Thalictrum thalictroides to treat diarrhea and vomiting (D. E. Moerman 1986).

Selected References

None.

Lower Taxa

None.

... more about "Thalictrum thalictroides"
Marilyn M. Park +  and Dennis Festerling Jr. +
(Linnaeus) A. J. Eames & B. Boivin +
Anemone thalictroides +
Rue-anemone +  and windflower +
Ont. +, Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, Tenn. +, Vt. +, Va. +, W.Va. +  and Wis. +
0-300 m +
Deciduous woods, banks, and thickets +
Flowering spring (Mar–Jun). +
Bull. Soc. Roy. Bot. Belgique +
Endemic +  and Illustrated +
Anemonella thalictroides +, Syndesmon thalictroides +  and Thalictrum anemonoides +
Thalictrum thalictroides +
Thalictrum sect. Anemonella +
species +