Rhizomatous, perennial, herb (sedge-like), 0.15-1 m high. Fl. Jan to Mar or Jun. White or grey/black sand. Winter-wet flats, swampy depressions.
Rhizomes tufted, glabrous. Basal sheath glabrous or tuft of hair at apex, glossy, striate. Culms terete, internal structure (at base of culm) hollow, hairy, striate, not marbled, not fasciculate. Culm 200-810 mm long. Sheaths (including blade) appressed throughout, dull, striate, glabrous, margins not translucent. Apex elongated, glabrous. Dioecious (with separate male and female plants). Male and female inflorescences distinctly dissimilar, posture (male inflorescences only) Distinctly drooping, Culms branched below the inflorescence. Male spikelet 2.8-5 mm long. Subtending bract glabrous, Outer bract 1.8-2.4 mm long, margins thin and translucent, Apex acuminate to attenuate. Perianth glabrous. 1.2-2.2 mm long. Inner bract glabrous, margins thin and translucent, Apex acute. Inner bract 1.5-2.2 mm long. Filament 1.2-2 mm long. Anther 0.5-0.9 mm long. Female spikelet 6.5-9.5 mm long. Subtending bract hairy, margins firm and opaque, Apex acuminate to attenuate. Outer bract 5-6 mm long. Perianth glabrous. 4-4.5 mm long. Inner bracts 5-5.5 mm long, hairy, margins firm and opaque, Apex acuminate to attenuate. Style one, arising centrally from the ovary apex. 5-6 mm long. Fruit indehiscent (nut). Flowering Time January, February, March, April, May or June. Botanical Province South-West, IBRA Bioregions Geraldton Sandplain, Swan Coastal Plain, Jarrah Forest or Warren.