Labrador Lousewort

Herbs biennial, 10--30 cm tall. Stems erect, rigid, pubescent, many branched; branches alternate, rarely opposite. Leaves alternate or ± opposite; petiole 2--10 mm; leaf blade linear-lanceolate, 1.5--6 cm, abaxially glandular pubescent, adaxially glabrous, pinnatifid or only double dentate apically; segments serrate or distal ones double dentate. Inflorescences racemose; bracts leaflike. Pedicel ca. 1 mm. Calyx 6--7 mm, ± leathery, glabrous or sparsely pubescent, deeply cleft anteriorly; lobes 3, unequal, entire. Corolla yellow, sometimes galea tinged with red or purple, 1.8--2 cm; tube ca. 1/2 as long as calyx, glabrous; galea slightly curved apically, with 1 lanceolate marginal tooth on each side at apex; lower lip nearly as long as galea, ciliate. 2 filaments pubescent, 2 glabrous. Capsule broadly lanceolate, apex acute. Fl. Aug, fr. Sep. 2n = 16.

NE Nei Mongol [Arctic and subarctic Asia, Europe, and North America].

Mossy and lichenous luxuriant heath and tundra; 300--900 m.

Pedicularis euphrasioides Stephan ex Willdenow; P. euphrasioides var. labradorica (Houttuyn) Willdenow; P. labradorica Houttuyn, not Wirsing; P. labradorica Wirsing var. simplex Hulten.