Thalictrum sparsiflorum

Turczaninow ex Fischer & C. A. Meyer

Index Sem. Hort. Petrop. 1: 40. 1835

Common names: Mountain meadow-rue few-flowered meadow-rue
Selected by author to be illustrated
Synonyms: Thalictrum sparsiflorum subsp. richardsonii (A. Gray) Cody Thalictrum sparsiflorum var. nevadense B. Boivin Thalictrum sparsiflorum var. richardsonii (A. Gray) B. Boivin Thalictrum sparsiflorum var. saximontanum B. Boivin
Treatment appears in FNA Volume 3.
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Stems erect, leafy, slender, (20-)30-100(-120) cm, glabrous. Leaves mostly cauline, proximal leaves petiolate, distalmost sessile. Leaf blade (2-)3-ternate; leaflets obovate to orbiculate or cordate, usually 3-cleft and divisions 3-lobed, thin, 10-20 mm, surfaces abaxially often glandular-puberulent. Inflorescences axillary, 1-few flowers, diffuse, leafy; bracts leaflike, large. Flowers: pedicels abruptly recurved in fruit; sepals whitish or greenish, often purplish tinged, elliptic, 2-3.5(-4) mm; stamens 12-20, whitish; filaments 3-4.5 mm; anthers 0.5-0.8 mm. Achenes (4-)6-12; stipe 0.3-1.5 mm; body obliquely obovate to half-rhombic, strongly compressed, (4-)5-6 × 3-4 mm, abaxial margin straight, glabrous or glandular-puberulent, faintly 3-4(-5)-veined; beak 1-1.5 mm.

Phenology: Flowering late spring–summer (Jun–Aug).
Habitat: Meadows, damp thickets, bogs, and coniferous, deciduous, and riparian woods
Elevation: 0-3000 m

Distribution

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Alta., B.C., Man., N.W.T., Ont., Sask., Yukon, Alaska, Calif., Colo., Idaho, Mont., Nev., Oreg., Utah, Wyo., ne Asia.

Discussion

The Cheyenne the flowers and ground plants of Thalictrum sparsiflorum medicinally to make their horses "spirited, long-winded, and enduring" (D. E. Moerman 1986).

References

None.

Lower Taxa

No lower taxa listed.