Tetraria triangularis C.B.Clarke

Perennial herb, tufted, base mucilaginous within, up to 0.6 m high. Leaves: sheaths stout, not torn; blades ± 6 mm wide, margins apparently revolute above sheath, margins with cutting edges. Culm nodose, sharply 3-angled, 2-3 mm in diam. Inflorescence a narrow, erect panicle ± 250 x 25 mm, with 1 or 2 erect branches from each of upper nodes. Subtending bracts sheathing culm; blades leaf-like. Spikelets elliptic, 9-12 x 3-4 mm; flowers 2, lower male, upper bisexual. Glumes: sterile moderately long-awned; fertile boat-shaped, ± 9 mm long, keel excurrent into minute point. Perianth of variable number, scabrid bristles small, linear. Flowering time Jan.-May. Nutlet elliptic, ± 5.5 mm long, shining, reddish brown; style base small, surface wrinkled.