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FNA | Family List | FNA Vol. 7 | Brassicaceae | Braya

3d. Braya humilis (C. A. Meyer) B. L. Robinson subsp. porsildii J. G. Harris, Novon. 16: 348. 2006.

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 pubes-cent. 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.

Flowering May-Jul. Dry alpine scree slopes, glacial moraines, and gravel bars, often on limestone gravels and soils; 500-3000 m; Alta., B.C., N.W.T.

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.


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