Difference between revisions of "Swertia perennis"
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|genus=Swertia | |genus=Swertia | ||
|species=Swertia perennis | |species=Swertia perennis | ||
Latest revision as of 13:16, 24 November 2024
Herbs 0.8–6.5 dm. Stems usually 1 + 1–few rosettes. Leaf blades obtuse to subacute, not white-margined; basal and rosette blades spatulate-obovate to elliptic, 3–22 cm × 10–32 mm; cauline alternate, subopposite, or distal often opposite, blades elliptic-oblanceolate. Inflorescences narrow, open, often few-flowered. Flowers (4- or)5-merous; calyx 4–8 mm; corolla bluish white to violet-blue, sometimes with darker spots, or rarely greenish white, veins darker, 7–16 mm, lobes lanceolate-oblong, apex acute; corona low, ± fringed ridge; openings of foveae oval to round, rims fringed all around. 2n = 28.
Phenology: Flowering summer–early fall.
Habitat: Wet meadows, thickets, bogs, stream banks.
Elevation: 0–3900 m.
Distribution
B.C., Alaska, Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash., Wyo., restricted to high elevations southward, Eurasia.
Discussion
A specimen considered perhaps to be from the Yukon Territory is more likely from British Columbia, but Swertia perennis should be expected in the Yukon.
Selected References
None.