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 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"
short-stipitate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
Marilyn M. Park +  and Dennis Festerling Jr. +
(Linnaeus) A. J. Eames & B. Boivin +
cuneate +, truncate +  and cordate +
Anemone thalictroides +
straight +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
8-10-veined +
ovoid;fusiform +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
globose;cylindric +
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 +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
(1-)3-6-flowered +
showy +  and inconspicuous +
unisexual +
0 cm0 mm <br />0 m <br /> (41 cm410 mm <br />0.41 m <br />) +
stipitate +, sessile +  and aggregate +
falcate;ovoid;obovoid +
Deciduous woods, banks, and thickets +
sessile +, petiolate +  and 3-foliolate +
whorled +, opposite +  and alternate +
3-lobed +, obovate +  and nearly rotund +
0.8 cm8 mm <br />0.008 m <br /> (3 cm30 mm <br />0.03 m <br />) +
palmate +  and pinnate +
crenate;entire +
(1-)2-200-flowered +
distinct +
conspicuous +
reduced +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Flowering spring (Mar–Jun). +
1 +  and 16 +
Bull. Soc. Roy. Bot. Belgique +
not arillate +  and stalked +
white;pinkish +
not caducous +
distinct +
elliptic +  and obovate +
0.5 cm5 mm <br />0.005 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
ribbed +  and veined +
Endemic +  and Illustrated +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
persistent +
Anemonella thalictroides +, Syndesmon thalictroides +  and Thalictrum anemonoides +
Thalictrum thalictroides +
Thalictrum sect. Anemonella +
species +
(1-)3-6-flowered +
herbaceous +  and woody +