Juncus flavidus L.A.S.Johnson

J.M. Black’s Fl. South Australia, edn 3, 1: 325 (1978) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Tufted perennial with horizontal or ascending rhizomes. Cataphylls usually loose, reddish-brown or dark brown towards the base (occasionally only pale brown), to c. 30 cm long. Culms erect, dull yellow-green to dull blue-green, occasionally glaucous when young, 35–120 cm high and 0.9–5.5 mm diam.; striations 50–130, not or scarcely raised, very crowded and often difficult to count; pith interrupted throughout or in part, air spaces variable in size; stomates sunken in pits. Inflorescence variable, flowers either clustered (but clusters rarely sub-globular in shape), or scattered; primary bract continuous with culm, to c. 30 cm long; prophylls present. Tepals stramineous, 2.7–3.5 mm long; stamens 3–6, anthers 0.7–1.2 mm long. Capsules stramineous with a golden-brown apex, shorter than, equal to, or very rarely slightly exceeding the tepals, 2.0–3.2 mm long. Flowers mostly Sep.–Dec., seeds shed mostly Dec.–Mar.

CVU, DunT, EGL, EGU, GipP, Glep, Gold, GGr, HNF, HSF, LoM, MonT, MuF, MuM, MSB, NIS, OtP, OtR, RobP, Strz, VAlp, VRiv, VVP, Wim. Also WA, SA, Qld, NSW, ACT. Introduced in New Zealand. Occurring in wet depressions and along drainage lines from almost sea-level to the subalps.

Distinctive characters of Juncus flavidus are the dull culms, some or all of which are almost smooth when viewed just above the apex of the longest cataphyll, the comparatively long acuminate tepals (the tips of which are easily broken), the large anthers and the cataphyll bases, which are typically distinctively reddish-brown. Juncus flavidus is most likely confused with J. subsecundus and J. australis. Hybrids with J. pallidus, J. australis and J. subsecundus 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 flavidus in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Juncus flavidus in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present native
Murray Mallee present native
Wimmera present native
Glenelg Plain present native
Victorian Volcanic Plain present native
Victorian Riverina present native
Murray Scroll Belt present native
Robinvale Plains 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
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
Otway Ranges present native
Strzelecki Ranges present native
Monaro Tablelands present native
Victorian Alps present native

State distribution

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