Densely clumped herb, to 0.2 m wide. Peat, laterite. Edges of swamps, valleys.
Beard’s Provinces: South-West Province.
IBRA Regions: Jarrah Forest.
IBRA Subregions: Southern Jarrah Forest.
Local Government Areas (LGAs): Augusta-Margaret River.
Rhizomes tufted, hairy. Basal sheath glabrous, glossy, striate. Culms flattened, internal structure (at base of culm) hollow, glabrous, striate, not marbled, not fasciculate. Culm 500-910 mm long. Sheaths (including blade) appressed throughout, dull, striate, glabrous, margins translucent. Apex elongated, glabrous. Dioecious (with separate male and female plants). Male and female inflorescences similar, posture (male inflorescences only) Distinctly drooping, Culms unbranched below the inflorescence. Male spikelet 4.5-5 mm long. Subtending bract glabrous, Outer bract 4-5.2 mm long, margins firm and opaque, Apex acute. Perianth glabrous. 4-4.3 mm long. Inner bract glabrous, margins firm and opaque, Apex acute. Inner bract 5.5-5.7 mm long. Filament 0-0.1 mm long. Anther 1.5-2 mm long. Female spikelet 6-7 mm long. Subtending bract glabrous, margins firm and opaque, Apex acute. Outer bract 2.5-3 mm long. Perianth glabrous. 5.5-6 mm long. Inner bracts 5-6.2 mm long, hairy, margins firm and opaque, Apex acute. Style two (or two-branched). 3.6-4 mm long. Fruit bilocular (capsule). Botanical Province South-West, IBRA Bioregions Jarrah Forest. Conservation Code Priority One (P1).
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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/