Thalictrum alpinum

Linnaeus
Sp. Pl. 1: 545. 1753.
Common names: Arctic meadow-rue dwarf meadow-rue pigamon alpin
Illustrated
Synonyms: Thalictrum alpinum var. hebetum B. Boivin
Treatment appears in FNA Volume 3.

Stems erect, scapose, or nearly scapose with very slender rhizomes, (3-)5-20(-30) cm, glabrous. Leaves all basal or single cauline leaf near base, 2-10 cm. Leaf blade 2×-pinnately compound, proximal primary divisions ternate; leaflets cuneate-obovate to orbiculate, apically 3-5-lobed, 2-10 mm, surfaces glabrous. Inflorescences racemes, usually elongate, few flowered. Flowers: pedicels recurved in fruit; sepals early deciduous, purplish tinged, ovate or elliptic, 1-2.3(-2.7) mm; stamens 8-15; filaments purple; anthers bright yellow, 1.5-3 mm; stigmas purple. Achenes 2-6, nearly sessile; body lance-obovoid, 2-3.5 mm, with thick veins. 2n = 14, 21.


Phenology: Flowering late spring–summer (Jun–Aug).
Habitat: Wet meadows, damp rocky ledges and slopes, and cold (often calcareous) bogs in willow-sedge, lodgepole pine, and spruce-fir
Elevation: 0-3800 m

Distribution

V3 642-distribution-map.gif

Greenland, B.C., Nfld. and Labr. (Nfld.), N.W.T., Que., Yukon, Alaska, Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wyo., n Eurasia.

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Thalictrum alpinum"
Marilyn M. Park +  and Dennis Festerling Jr. +
Linnaeus +
Arctic meadow-rue +, dwarf meadow-rue +  and pigamon alpin +
Greenland +, B.C. +, Nfld. and Labr. (Nfld.) +, N.W.T. +, Que. +, Yukon +, Alaska +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wyo. +  and n Eurasia. +
0-3800 m +
Wet meadows, damp rocky ledges and slopes, and cold (often calcareous) bogs in willow-sedge, lodgepole pine, and spruce-fir +
Flowering late spring–summer (Jun–Aug). +
Illustrated +
Thalictrum alpinum var. hebetum +
Thalictrum alpinum +
Thalictrum sect. Thalictrum +
species +