Braya alpina Sternberg & Hope var. americana Hooker; B. americana (Hooker) Fernald; B. bartlettiana Jordal; B. bartlettiana var. vestita Hultén; B. henryae Raup; B. humilis (C. A. Meyer) B. L. Robinson var. americana (Hooker) B. Boivin

Stems ascending to erect, 0.5-1.7(-2.3) dm. Leaves: blade often somewhat fleshy, to 4 mm wide, margins often entire, sometimes 1 or 2 weak teeth per side. Racemes often loosely elongated in fruit. Fruits oblong to narrowly oblong-lanceoloid, often curved, (0.3-)0.5-1.2(-1.5) cm × (0.8-)1.1-3 (-3.6) mm, 3.5-8.3 times as long as wide; style slender or stout, (0.3-)0.5-1.6(-2) mm. 2n = 56.

Flowering Jun-Jul. Barren, usually calcareous soils and gravel, gravel bars, disturbed sites, lake and sea shores, scree slopes, solifluction lobes; 0-3700 m; Alta., B.C., N.W.T., Nunavut, Que., Yukon; Alaska, Colo., Mont., Wyo.; Asia.