Juncus gregiflorus L.A.S.Johnson

Contr. New South Wales Natl Herb. 3: 243 (1963) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Densely tufted perennial with horizontal or ascending rhizomes. Cataphylls brown to reddish-brown towards the base, to c. 28 cm long. Culms erect, bright shiny green, 40–170 cm high and 1.0–3.0 mm diam.; striations 30–70, moderately strongly raised; pith interrupted, usually with large air spaces; stomates superficial. Inflorescence with flowers clustered (very rarely some scattered), the clusters ± separated by bare branches; primary bract continuous with culm, to c. 30 cm long; prophylls present. Tepals stramineous, 1.6–2.4(–2.7) mm long; stamens 3, anthers c. 0.4–0.7 mm long. Capsules with a flattened reddish-brown or occasionally stramineous apex, shorter than, equal to or exceeding the tepals, 1.5–2.4 mm long. Flowers mostly Nov.-Jan., seeds shed mostly Dec.-Mar.

CVU, EGL, EGU, GipP, Gold, GGr, HFE, HNF, HSF, MonT, MuF, NIS, OtP, OtR, SnM, Strz, VAlp, VRiv, VVP, Wim. Also WA, NSW, ACT, Tas. New Zealand. Common in eastern Victoria, less common west of Melbourne. Occurs primarily in riparian vegetation, but also common in moist modified sites such as dam margins, roadside drains and pastures.

A distinctive species in the field with its bright green culms (typically with large air spaces), dark cataphylls, clustered flowers, short acute (rather than acuminate) tepals (very rarely exceeding 2.4 mm long) and flat-topped capsules. Juncus gregiflorus could be confused with J. australis, J. amabilis, J. procerus, J. alexandri and J. bassianus. See notes under these species for differences. Hybrids with J. amabilis, J. procerus and J. sarophorus 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 gregiflorus in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Juncus gregiflorus 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
Gippsland Plain present native
Otway Plain present native
Goldfields present native
Central Victorian Uplands present native
Greater Grampians 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
Otway Ranges present native
Strzelecki Ranges present native
Monaro Tablelands present native
Highlands-Far East present native
Victorian Alps present native
Snowy Mountains present native

State distribution

Distribution map
Western Australia
New South Wales
Australian Capital Territory