Fimbristylis aestivalis (Retz.) Vahl

Summer Fringe-rush

Enum. Pl. 2: 288 (1805) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: data deficient (k)

Small, densely tufted annual. Culms compressed, angular, 3–20 cm high, 0.3–0.5 mm diam. Leaves shorter than culms, minutely hispid, 0.3–0.5 mm wide; ligule absent. Inflorescence simple to compound, with several to many solitary spikelets, on branches to 5 cm long; involucral bracts leaf-like, 1–4 slightly exceeding inflorescence. Spikelets ovoid, angular, acute, 3–7 mm long, 1–1.5 mm diam.; glumes thinly membranous, ± acute, shortly mucronate, with obscurely 3-nerved acute keel, and pubescent or glabrous nerveless sides, minutely hispid near keel, straw-coloured to pale red-brown, 1.2–1.5 mm long; stamen 1; anther 0.3–0.5 mm long; style 2-fid, sparsely ciliate above, glabrous or with a few short cilia at base. Nut biconvex, with acute angles, broad-ellipsoid, shortly stipitate, smooth, shining, obscurely reticulate by the iso-diametric epidermal cells, pale yellow, 0.5–0.7 mm long, 0.4–0.5 mm diam. Flowers spring–summer.

CVU, MuF, MuM, NIS, RobP, VRiv. All mainland States. Asia, Malesia. In damp, usually sandy places beside watercourses and on floodplains chiefly of the Ovens, King and Murray Rivers, with a disjunct occurrence at Lake Glenmaggie near Heyfield.

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.
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Poales
family Cyperaceae
genus Fimbristylis
Higher taxa


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

State distribution

Distribution map
Western Australia
Northern Territory
South Australia
New South Wales