Erect rounded shrub, 1-4 m tall, non-sprouting. Branchlets glabrous by flowering. Leaves uniform or seasonally heteromorphic, subterete to linear and trigonous, rarely obovate-linear, concave, 3.5-12 cm long, 1-10 mm wide, glabrous; venation not visible in terete leaves; longitudinal veins prominent and 3 at angles (marginal veins and midvein on underside) in trigonous and flat leaves; intermediate veins sometimes visible below, usually not visible above. Inflorescence a solitary axillary umbelliform raceme, with 16-36 flowers; pedicels pink, glabrous. Perianth cream-white. Pistil 4.5-6.2 mm long; gland a small flap, c. 0.5 mm high. Fruit ellipsoidal to ovoid, ±straight, 1.2-2.5 cm long, 0.2-1.3 cm wide, not beaked but usually gibbous towards apex, shortly apiculate. Seed obliquely elliptic, 8-15 mm long, 3.5-6 mm wide; wing extending down both sides of body, more broadly and further down adaxial side, sepia with blackish brown streaks and patches.
Found in dry regions, bounded approximately by the 250 mm and 500 mm rainfall isohyets, in mallee-heath vegetation in calcareous sandy soil.
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