Tephroseris tundricola

Perennials, 5-15 cm (unevenly floccose-tomentose to glabrate, especially distal stems, adaxial leaf faces, and phyllaries; rhizomes weakly spreading or suberect). Stems single or loosely clustered. Leaves basal and cauline; petioles weakly winged (passing into blades); blades ovate to lanceolate, 3-5 × 0.5-1.5 cm, margins subentire to denticulate (cauline narrower, sessile, bractlike). Heads 1(-4). Involucres ± abruptly contracted to peduncles. Phyllaries usually 21, green (tips sometimes purplish), 6-8 mm. Ray florets usually 13; corolla laminae 9-12 mm. Disc florets 30-50+; corollas yellow. Cypselae pubescent; pappi white. 2n = 48.

Flowering Jul-Aug. Protected sites on talus and ridges; 0-300 m; Alaskaw; ne Asia (Russia).

In the flora area, Tephroseris tundricola is known only from the Bering Strait region. It is similar to T. lindstroemii; the two are treated in the same species in contemporary Russian floristic studies. Our plants are separable by the characters given in the key.