Prodr. 224 (1810) APNI
Perennial aquatic with stout rhizome. Culms terete, transversely septate, to 5 m high (in deep water), to c. 1.5 m above water, 4–12 mm diam. Spikelet terete, tapering to apex, 3–5 cm long, 8–9 mm diam., glumes ± obtuse, finely striate with a fairly prominent midrib and narrow hyaline margins, straw-coloured, usually with dark reddish band near margins, 7–11 mm long; hypogynous bristles 8–10, reaching at least to top of the style-base, sparsely but regularly toothed, united at the base; stamens 3; anthers 3–5 mm long; style 3-fid. Nut turgidly biconvex, with angles not ribbed, obovoid to orbicular, straw-coloured to dark golden brown, 2–2.7 mm long, 1.8–2.5 mm diam., external cells irregularly isodiametric, often elongated vertically in no regular series; style-base from one-half as long as to equalling and about two-thirds as wide as nut. Flowers spring–summer.
CVU, DunT, EGL, EGU, GipP, Glep, Gold, GGr, HNF, HSF, MonT, MuF, MuM, NIS, OtP, OtR, SnM, Strz, VAlp, VRiv, VVP, WaP, WPro, Wim. All States. New Guinea. In still or slow-moving freshwater to 5 m deep or more; widespread from near sea-level to subalps (e.g. Mt Buffalo).
|Bioregion||Occurrence status||Establishment means|
|Victorian Volcanic Plain||present||native|
|Central Victorian Uplands||present||native|
|Northern Inland Slopes||present||native|
|East Gippsland Lowlands||present||native|
|East Gippsland Uplands||present||native|
|New South Wales|
|Australian Capital Territory|