London J. Bot. 6: 474 (1847) APNI
Taxonomic status:Accepted
Occurrence status:Present
Establishment means:Native
Perennial marsh, aquatic or emergent herb; stems mat-forming, rooting at the nodes, or more or less erect, to 25 cm tall, c. 1 mm diam. Leaves opposite, linear to terete or filiform, with a terminal gland, 4–22 mm long, margins entire or with 1 or 2 lobes. Bracteoles linear to oblong or triangular, 0.4–0.7 mm long, entire or toothed, larger in male flowers; flowers solitary. Male flowers initially sessile, pedicel elongating to 1–4.5 mm; sepals 4, linear to ovate, 0.7–1.5 mm long; petals 4, 1.7–2.5 mm long, yellow to red; stamens 8. Female flowers sessile or shortly pedicellate; sepals filiform to triangular, c. 0.25 mm long, long persistent; petals absent; ovary 4-celled, styles attenuate, reflexed, stigmas white to red. Fruit cubiform, reddish-purple to black; mericarps more or less teardrop-shaped, 1–1.6 mm long including style, attenuate, smooth or warty.
CVU, EGL, GipP, Glep, GGr, HFE, HNF, HSF, MonT, OtP, SnM, VAlp, VRiv, VVP, WPro.
3 subspecies, 2 occurring in Australia.
| Bioregion | Occurrence status | Establishment means | |
|---|---|---|---|
| Glenelg Plain | present | native | |
| Victorian Volcanic Plain | present | native | |
| Victorian Riverina | present | native | |
| Gippsland Plain | present | native | |
| Otway Plain | present | native | |
| Central Victorian Uplands | present | native | |
| Greater Grampians | present | native | |
| East Gippsland Lowlands | present | native | |
| Wilsons Promontory | present | native | |
| Highlands-Southern Fall | present | native | |
| Highlands-Northern Fall | present | native | |
| Monaro Tablelands | present | native | |
| Highlands-Far East | present | native | |
| Victorian Alps | present | native | |
| Snowy Mountains | present | native |
| State |
|---|
| Queensland |
| New South Wales |
| Australian Capital Territory |
| Victoria |
| Tasmania |
