Juncus semisolidus L.A.S.Johnson

Telopea 5: 316 (1993) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

 Tufted robust perennial with horizontal or ascending rhizomes. Cataphylls ± loose, tapering to an acute apex, dark brown, reddish-brown to almost black towards the base, to c. 40 cm long. Culms erect, distinctly glaucous when immature but becoming bluish-green when mature, 90–160 cm high and 3–8.5 mm diam.; striations (60–)70–120, crowded to moderately crowded, not strongly raised; pith interrupted in the upper part and continuous below or occasionally continuous throughout; stomates slightly sunken. Inflorescence large, flowers clustered or occasionally scattered; primary bract continuous with culm, to c. 50 cm long; secondary bract subulate or acuminate, to 50 mm long; prophylls present. Tepals stramineous, 1.7–2.6(–2.8) mm long; stamens 3(–4) anthers c. 0.4–1.0 mm long. Capsules with a stramineous to golden-brown obtuse apex, equal to or exceeding the tepals, 2.0–2.5 mm long. Flowering period not known, seeds shed Dec.–Jan.

CVU, DunT, Gold, HNF, HSF, MuF, NIS, VRiv, VVP, Wim. Also NSW. Mostly confined to the north of the Great Dividing Range where occurring on heavy soils, favouring swamps with permanent or semipermanent water (typically dominated by Duma florulenta) and Eucalyptus camaldulensis-dominated woodland along watercourses, uncommon south of the Great Dividing Range (e.g. Laverton and Craigieburn areas). Also colonizes disturbed wet sites such as dam margins and roadside swales.

Juncus semisolidus has been confused with J. procerus and J. pallidus. It is readily distinguished from the former by culm colour and pith, and from the latter in having shorter tepals and capsules, and flowers with only 3 stamens. Hybrids with J. sarophorus and J. amabilis are known.

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 semisolidus in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Juncus semisolidus in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Wimmera present native
Victorian Volcanic Plain present native
Victorian Riverina present native
Murray Fans present native
Goldfields present native
Central Victorian Uplands present native
Dundas Tablelands present native
Northern Inland Slopes present native
Highlands-Southern Fall present native
Highlands-Northern Fall present native

State distribution

Distribution map
New South Wales