Cyperus flaccidus R.Br.

Prodr. 213 (1810) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: vulnerable (v)

Small tufted annual. Culms triquetrous above, flattened below, smooth or scabrous, 2–20 cm high, 1–2 mm diam. Leaves not septate-nodulose, 1–2 mm wide, mostly shorter than culms and often reduced to sheaths. Inflorescence simple with 3–7 branches to 8 cm long, or head-like; digitate clusters to 1.5 cm diam.; involucral bracts leaf-like, the lowest erect and appearing as a continuation of the culm, often much longer than inflorescence. Spikelets flattened, 2–8 per cluster, to 20-flowered, 5–10 mm long, 2–2.5 mm wide; rachilla not winged, persistent; glumes excurved-mucronate, with sides 1-nerved, whitish with obviously reticulate keel, 1–1.5 mm long; stamens 1 or 2. Nut triquetrous, broad-obovoid, brown, c. one-half as long as glume, c. 0.5 mm long, c. 0.3 mm diam. Flowers spring–summer.

MuF, MuM, MSB, RobP, VRiv, Wim. Also WA, SA, Qld, NSW. Japan, Korea. Rare in Victoria, occurring in seasonally wet sites (e.g. lake and river margins), recorded only from Mildura, Dimboola, Goroke and Cobram areas.

Source: Wilson, K.L. (1994). Cyperaceae. 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, 2019-02-18
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Poales
family Cyperaceae
genus Cyperus
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Cyperus flaccidus in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Cyperus flaccidus in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Murray Mallee present native
Wimmera present native
Victorian Riverina present native
Murray Scroll Belt present native
Robinvale Plains present native
Murray Fans present native

State distribution

Distribution map
Western Australia
Northern Territory
South Australia
New South Wales