Star or mountain bog swertia, star-gentian

Swertia perennis var. obtusa (Ledebour) Grisebach

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.

Flowering summer–early fall. Wet meadows, thickets, bogs, stream banks; 0–3900 m; B.C.; Alaska, Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash., Wyo., restricted to high elevations southward; Eurasia.

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.