Erect to decumbent herb to 50 cm tall. Stem slender, glabrous, angular, suberect. Leaves lanceolate or linear-lanceolate, rarely elliptic-lanceolate, ca. 3.5 x 0.3-1 cm, acute at apex and base, glabrous; petiole ca. 1 cm long. Inflorescence a terminal, rarely axillary, pedunculate, elongate, suberect raceme to 10 cm long; pedicels ca. 1.5 mm long; bracts lanceolate, ca. 0.8 mm long, acute; bracteoles linear-subulate, ca. 0.3 mm long, inserted at base of pedicel. Tepals elliptical, ca. 1.5 mm long, acute, with green midvein; stamens 6-9, anthers ca. 0.2 mm wide; ovary ca. 0.5 mm, stigmas 3(5-6)-partite, ca. 0.2 mm. Achenes exceeding tepals, black, globose, ca. 1.5 mm, acute, echinulate in a honeycomb pattern, spinelets glochidiate, with recurved apex and 4 retrorse apical bristles.
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