Juncus homalocaulis F.Muell. ex Benth.

Wiry Rush

Fl. Austral. 7: 128 (1878) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

 Tufted, shortly rhizomatous perennial. Culms erect, 2–40 cm high, each with up to 6 leaves and 1–3 cataphylls towards the base, fibrous remains of old cataphylls often persisting. Leaf-blades solid, longer or shorter than the culms and 0.3–0.8(–1) mm wide, rigid, channelled above or subterete, apex acute; auricles obtuse c. 0.5 mm long. Inflorescence of 1-several clusters of flowers terminating (or in the forks of) erect to recurved branches of variable length; clusters expanding to c. 1.6 cm diam. in fruit, with (1–)2–6(–10) flowers; primary bract exceeding the inflorescence; prophylls present. Tepals with a broad green midrib when young, margins pale membranous, strongly incurved towards the tip; outer tepals 4.5–8.5 mm long; inner distinctly shorter than the outer, acute-acuminate; stamens 3–6, anthers (0.7–)1.0(–1.3) mm long, often adhering to the apex of immature capsules. Capsules light brown or reddish-brown at maturity, ellipsoid, c. 3.5–6 mm long, usually with a short nipple-like apical projection, shorter than or rarely subequal to the tepals; seeds dark reddish-brown, almost globular, c. 0.4–0.6 mm long, with longitudinal and transverse ridges discernible at low magnification, minutely apiculate at one or both ends. Wiry Rush Flowers mostly Nov.–Mar., seeds shed mostly Dec.–Jul.

CVU, DunT, EGL, EGU, GipP, Glep, Gold, GGr, HNF, HSF, MonT, MuF, MuM, NIS, OtP, SnM, VRiv, VVP, WaP, Wim. Also SA, Qld, NSW, ACT. Apparently naturalised in New Zealand. A fairly widely distributed species of lower altitudes, occurring in damp sites in grassland, woodland and dry sclerophyll forests.

Some plants appear to have cleistogamous flowers.

Source: Albrecht, D.E. (1994). Juncus. 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: Val Stajsic, 2019-03-04
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Poales
family Juncaceae
genus Juncus
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Juncus homalocaulis in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Juncus homalocaulis in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Murray Mallee present native
Wimmera present native
Glenelg Plain present native
Victorian Volcanic Plain present native
Victorian Riverina present native
Murray Fans 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
Highlands-Southern Fall present native
Highlands-Northern Fall present native
Monaro Tablelands present native
Snowy Mountains present native

State distribution

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