It is a dwarf perennial that forms cushions and has well-developed rhizomes and stolons. The culms are erect, smooth, and 0.5–5 cm high, both slightly shorter and slightly exceeding the leaves in length. The leaves are borne on the more or less elongated aerial portion of a stem, with the older leaves persisting and turning yellow-brown. The inflorescence is a 1–5-flowered cluster, which expands to about 3–7 mm in diameter when in fruit. There are three stamens, sometimes six. The upper part of the ovoid capsules is reddish-brown, and they are 2–3 mm long.[5]
Distribution
In Australia, it is found in New South Wales, Tasmania, and Victoria. In Victoria, it is found late-lying snowpatches and at the edges of bogs and creeks on the Bogong High Plains.[5]
In the northern part of its range (in New Zealand[4] and Australia)[6] it is alpine to subalpine, but in the subantarctic islands and around Otago it is also found at sea level.[4]
Conservation status
In both 2009 and 2012 it was deemed to be "Not Threatened" under the New Zealand Threat Classification System,[4] and this New Zealand classification was reaffirmed in 2018, with the further comment that it is secure overseas.[7]
^ abHooker, J.D. (1844). "Juncus antarcticus". The Botany of the Antarctic Voyage of H.M. Discovery Ships Erebus and Terror in the Years 1839-1843 :under the Command of Captain Sir James Clark Ross. 1 (5): 79. Plate XLVI
^Lange, Peter J. de; Rolfe, Jeremy R.; Barkla, John W.; Courtney, Shannel P.; Champion, Paul D.; Perrie, Leon R.; Beadel, Sarah M.; Ford, Kerry A.; Breitwieser, Ilse; Schönberger, Ines; Hindmarsh-Walls, Rowan (2018). "Conservation status of New Zealand indigenous vascular plants, 2017"(PDF). New Zealand Threat Classification Series. 22: 67. OCLC1041649797.
.jpg)
