Stems ascending to erect or, rarely, decumbent, usually unbranched, 0.3–1.7 (–2.5) dm, densely pubescent. Leaves: blade margins usually entire, sometimes weakly sinuate-dentate, surfaces densely pubescent. Flowers: petals white, 4.4–6.9 × (1.9–) 2.3–4.2 mm. Fruits often abortive, somewhat torulose, 0.8–1.2 mm wide when fully developed; septum not fenestrate or split longitudinally. 2n = 28.

Phenology: Flowering May–Jul.
Habitat: Dry alpine scree slopes, glacial moraines, and gravel bars, often on limestone gravels and soils
Elevation: 500-3000 m

Distribution

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Alta., B.C., N.W.T.

Discussion

Subspecies maccallae and porsildii share the large flowers, high percentage of abortive fruits, and leaf margins mostly entire, but they differ in indumentum and habitats.

Selected References

None.

Lower Taxa

None.

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