Juncus holoschoenus R.Br.

Prodr. 259 (1810) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Tufted perennial with or without short rhizomes. Culms erect, new shoots occasionally arising from lower nodes, to c 90 cm high. Leaves cauline; blade hollow, with inconspicuous transverse septa when fresh, more obvious when dried, shorter or longer than the culms, slightly to distinctly compressed, c. 1–4 mm wide, apex acute or obtuse; auricles usually obtuse, up to c. 3.5 mm long. Inflorescence of (1–)2–75 close or distant clusters, each composed of 4–40 flowers, 7–14 mm wide in fruit; primary bract shorter or longer than the inflorescence; prophylls absent. Tepal midrib turning light brown, margins pale, membranous, reddish tinged towards apex; outer tepals (2.5–)3–4.7 mm long, acute to acuminate; inner equal to or longer than outer, acute to acuminate; stamens 6, anthers 0.4–1 mm long. Capsules light brown to golden-brown, trigonous-ovoid, 3–4.5 mm long, sub-equal to, or exceeding tepals by up to 1 mm, usually contracted rather abruptly (rarely tapering gradually) to an acute apex; seeds 0.5–0.6 mm long, slightly asymmetrical, finely reticulate-patterned discernible at moderately high magnification, minutely apiculate at each end. Joint-leaf Rush Flowers mostly Oct.–Dec., seeds shed mostly Dec.–Mar.

Brid, CVU, DunT, EGL, EGU, GipP, Glep, Gold, GGr, HNF, HSF, LoM, MonT, MuF, MuM, NIS, OtP, OtR, SnM, VAlp, VRiv, VVP, WaP, Wim. All States except NT. New Zealand. Occurs in riparian situations, swamps and drains.

Closely resembles Juncus fockei and some intergrading may occur where the two species grow in close proximity. In addition to the key characters, J. holoschoenus tends to be taller and stouter in stature than J. fockei. Also resembles J. oxycarpus and J. acuminatus (see notes under those species).

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

Victoria

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

State distribution

Distribution map
State
Western Australia
South Australia
Queensland
New South Wales
Australian Capital Territory
Victoria
Tasmania