Stems decumbent to prostrate or weakly ascending, 0.3-1.5 dm. Leaves: blade not fleshy, to 6 mm wide, margins usually entire. Racemes not elongated in fruit (often compact). Fruits oblong-elliptic to broadly oblong-lanceoloid, straight or curved, (0.7-)0.8-1.2 cm × 2.5-3.6 mm, 2.5-3.7 times as long as wide; style stout, 0.8-1.8 mm. 2n = 56.

Flowering Jun-Jul. Dry or damp sand and silt on barren slopes and plains; 0-200 m; Nunavut.

Subspecies prostrata is known only from Ellesmere Island.