Baumea rubiginosa (Spreng.) Boeck.

Soft Twig-rush

Linnaea 38: 241 (1874) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Perennial with short stout rhizome. Culms rigid, terete to biconvex, 1–2-noded, rarely nodeless, striate, glabrous, smooth, 20–110 cm high, 1–5 mm diam. Leaves basal and cauline; basal blades flattened at least near apex, often sub-terete below, usually broader than and often exceeding culms, 1.5–7 mm wide; cauline blades much reduced; sheath straw-coloured, rarely with reddish tinges, dull. Inflorescence interrupted-oblong in outline, narrow, erect, with dense clusters, mostly 7–35 cm long, 1–2.5 cm diam.; lowest involucral bract much shorter than inflorescence. Spikelets 2–3-flowered, 4–7 mm long; glumes 5, acute to long-acute, red-brown, margins ciliate; fertile glumes 3.7–6 mm long. Nut ellipsoid to obovoid, smooth, with hispid apex, shining, pale red-brown to bright orange, 2.2–4 mm long, 1.2–2.0 mm diam. Flowers spring–summer.

CVU, DunT, EGL, EGU, GipP, Glep, Gold, GGr, HNF, HSF, LoM, MonT, NIS, OtP, VAlp, VRiv, VVP, WaP, WPro, Wim. All States. New Zealand, Malesia, New Caledonia. In swamps and other damp areas, on sandy soils, usually amongst heathy vegetation.

All records at MEL of this species from western Victoria are based on misidentified material of the very similar B. arthrophylla (see notes under that species). The apparent absence of B. rubiginosa from the west of the state is surprising given its occurrence in SA and WA, and may be an artefact of patchy collecting.

Source: Wilson, K.L. (1994). Cyperaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne.
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Poales
family Cyperaceae
genus Baumea
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Baumea rubiginosa in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Baumea rubiginosa in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present native
Wimmera present native
Glenelg Plain present native
Victorian Volcanic Plain present native
Victorian Riverina 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
East Gippsland Lowlands present native
East Gippsland Uplands present native
Wilsons Promontory present native
Highlands-Southern Fall present native
Highlands-Northern Fall present native
Monaro Tablelands present native
Victorian Alps present native

State distribution

Distribution map
Western Australia
Northern Territory
South Australia
New South Wales
Australian Capital Territory