Rhizomatous, erect perennial, herb, 0.3-0.5 m high. Fl. brown, Sep to Dec. Peaty sand. Swamps.
Beard’s Provinces: South-West Province.
IBRA Regions: Jarrah Forest, Swan Coastal Plain, Warren.
IBRA Subregions: Perth, Southern Jarrah Forest, Warren.
Local Government Areas (LGAs): Augusta-Margaret River, Busselton, Capel, Nannup, Plantagenet.
Rhizomes spreading, hairy. Basal sheath glabrous, dull, striate. Culms terete, internal structure (at base of culm) hollow, glabrous, striate, not marbled, not fasciculate. Culm 280-780 mm long. Sheaths (including blade) appressed throughout, dull, striate, hairy, margins not translucent. Apex elongated, hairy. Dioecious (with separate male and female plants). Male and female inflorescences distinctly dissimilar, posture (male inflorescences only) More or less erect, Culms unbranched below the inflorescence. Male spikelet 6-11 mm long. Subtending bract hairy, Outer bract 5.5-6 mm long, margins firm and opaque, Apex acuminate to attenuate. Perianth glabrous. 4-4.5 mm long. Inner bract glabrous, margins thin and translucent, Apex acuminate to attenuate. Inner bract 6-7.5 mm long. Filament 1-1.5 mm long. Anther 1.8-2 mm long. Fruit bilocular (capsule). Flowering Time September, October or November. Botanical Province South-West, IBRA Bioregions Swan Coastal Plain, Jarrah Forest or Warren. Conservation Code Priority Three (P3).
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Western Australian Herbarium (1998–). FloraBase—the Western Australian Flora. Department of Biodiversity, Conservation and Attractions. https://florabase.dpaw.wa.gov.au/