Perennials; caudex simple or branched, (woody, cespitose); ± densely pubescent, trichomes (sessile or short-stalked), several-rayed, rays distinct, furcate or bifurcate, (somewhat umbonate, finely tuberculate to ± smooth). Stems simple or few to several from base, erect to spreading or prostrate, 0.5–2 (–3) dm. Basal leaves (usually ± rosulate); blade obovate to oblanceolate, (1–) 2–6 (–15) cm, margins entire. Cauline leaves (sessile or shortly petiolate); blade oblanceolate or lingulate, 0.5–1.5 (–3) cm, margins entire. Racemes loose. Fruiting pedicels (erect to divaricate or ascending), (5–) 10–20 (–40) mm, (stout). Flowers: sepals ovate to elliptic, (3–) 4–5 (–6) mm, (median pair often thickened apically, cucullate); petals spatulate, 5–6 (–7) mm, (blade gradually narrowed to claw). Fruits subglobose to ellipsoid, uncompressed, 4–6 (–9) mm; valves (not retaining seeds after dehiscence), glabrous or sparsely pubescent outside, trichomes sessile; replum as wide as or wider than fruit; ovules (8–) 10–14 (–16) per ovary; style 1–2.5 (–4) mm. Seeds plump. 2n = 60.

Phenology: Flowering May–Aug.
Habitat: Typically on sand and gravel from calcareous bedrock, river bars and terraces, cliff ledges, scree and talus slopes, often growing after disturbance
Elevation: 0-1800 m

Distribution

• Generated Map
• Legacy Map

Greenland, Alta., B.C., Man., Nfld. and Labr., N.W.T., Nunavut, Que., Yukon, Alaska, circumarctic (except n Europe), circumarctic (ne Russia)

Discussion

Selected References

None.

Lower Taxa

None.

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