Amphibromus pithogastrus S.W.L.Jacobs & Lapinpuro

Plump Swamp Wallaby-grass

Telopea 2: 724 (1986) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: endangered (e); listed in Flora and Fauna Guarantee Act 1988

Tufted perennial; culms to 1 m high. Leaves glabrous, smooth; blade flat or inrolled, to 20 cm long and 1.5–5 mm wide; ligule truncate to acute, 1.5–5 mm long. Inflorescence a slender, erect panicle, to 25 cm long. Spikelets 2–6-flowered, 8–15 mm long (excluding awns), green; glumes obtuse to acute, often erose at apex, the lower 3–5-nerved, 3–5.5 mm long, the upper 5–7-nerved, 3.5–7 mm long; lemma 4–7.5 mm long, smooth or minutely papillose, swollen in the lower part, gently constricted above the level of the grain, apical teeth 4 but the lateral pair often rudimentary so that the appearance is of 2 shallowly notched lobes, the sinus between them being 0.5–1.5 mm; awn 8–16 mm long, inserted 20–35% of the lemma length from the apex, column 3–5 mm long; palea from one-half to three-quarters as long as lemma. Flowers Oct.–Dec.

CVU, DunT, Gold, VVP. Also NSW. A rare species of shallow, seasonally inundated depressions (e.g. gilgais) on water-retentive clay soils supporting grasslands and grassy woodlands. Known from near Mansfield and scattered occurrences to the south and west (e.g. Yea, Heathcote, Craigieburn, Beaufort, Dunkeld, Casterton).

Source: Walsh, N.G. (1994). Poaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne.
Updated by: Neville Walsh, 2015-07-02
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Poales
family Poaceae
genus Amphibromus
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Amphibromus pithogastrus in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Amphibromus pithogastrus in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present native
Goldfields present native
Central Victorian Uplands present native
Dundas Tablelands present native

State distribution

Distribution map
South Australia
New South Wales
Australian Capital Territory