Defin. Austral. Pl. 53 (1855)
Taxonomic status:Accepted
Occurrence status:Present
Establishment means:Native
Slender annual herb, (2–)4–12 cm high. Leaves flat and thread-like, 1–6 cm long, shorter than to almost as long as the infructescence. Scape at fruiting erect or ascending, (1–)1.5–5.5 cm long; infructescence (0.5–)1–3(–5) cm long, with (3–)5–16(–24) fruits. Fruits narrowly pyramidal, (2.2–)3–4.5 mm long, 0.5–1.2 mm wide just above base; pedicel 0.5–2.5(–3) mm long; carpels 6, 3 fertile carpels alternating with 3 undeveloped sterile ones; fertile carpels flat to keeled or slightly convex dorsally when dry, at base with 2 lateral acute or obtuse points 0.1–0.5 mm long. Fruits Aug.–Nov.
Brid, CVU, DunT, GipP, Glep, Gold, GGr, HNF, LoM, MuM, MSB, NIS, OtP, RobP, VRiv, VVP, WaP, WPro, Wim. Also WA, NT, SA, Tas. Widespread and common in low-lying, usually somewhat saline, depressions, mostly in sandy soils.
Triglochin nana is a widespread and variable species, and it its extremes may easily be confused with T. isingiana, T. longicarpa and T. minutissima. From the latter two, T. nana is generally distinguished by the presence of spurs on fruits, and from T. isigniana it may be distinguished by the shorter carpel spurs and flattened fruits. However, plants appear to grade from spurs that are near-absent to long-spurred, and boundaries of these four species may prove to be unsatisfactory.
| Bioregion | Occurrence status | Establishment means | |
|---|---|---|---|
| Lowan Mallee | present | native | |
| Murray Mallee | present | native | |
| Wimmera | present | native | |
| Glenelg Plain | present | native | |
| Bridgewater | present | native | |
| Victorian Volcanic Plain | present | native | |
| Victorian Riverina | present | native | |
| Murray Scroll Belt | present | native | |
| Robinvale Plains | present | native | |
| Gippsland Plain | present | native | |
| Otway Plain | present | native | |
| Warrnambool Plain | present | native | |
| Goldfields | present | native | |
| Central Victorian Uplands | present | native | |
| Greater Grampians | present | native | |
| Dundas Tablelands | present | native | |
| Northern Inland Slopes | present | native | |
| Wilsons Promontory | present | native | |
| Highlands-Northern Fall | present | native |
| State |
|---|
| Western Australia |
| Northern Territory |
| South Australia |
| Queensland |
| New South Wales |
| Victoria |
| Tasmania |
