Bolboschoenus fluviatilis (Torr.) Soják

Cas. Nar. Mus., Odd. Prir. 141: 62 (1972) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: data deficient (k)

Rhizomatous perennial. Culms 100–200 cm high, 5–10 mm diam. Leaves recurved above, 7–11 mm wide. Inflorescence with 6–9 branches 2–10 cm long, bearing clusters of 1–6 spikelets; involucral bracts 15–25 cm long, 3–6 mm wide. Spikelets 1–2.5 cm long; glumes yellow-brown, 6–7 mm long, plus awn 1.5–3 mm long; hypogynous bristles about as long as nut, usually persistent; style 3-fid. Nut equally trigonous, with dorsal angle acute, pale yellow or grey and dull to blackish and shining, minutely (but often obviously) reticulate, 3–4 mm long, 1.5–2 mm diam. Flowers spring–summer.

CVU, EGL, EGU, GipP, Gold, HNF, HSF, NIS, VRiv, VVP. Also SA (naturalised), Qld, NSW, NI, ACT, Vic. New Zealand, Asia, North America. Scattered and rather uncommon, chiefly in the east (one western record near Streatham), occurring in shallow water on lake margins and in open swamps.

Differs from the other species in its relatively narrow nut with bristles about as long as nut and persistent.

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, 2018-07-31
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Poales
family Cyperaceae
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Bolboschoenus fluviatilis in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Bolboschoenus fluviatilis in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present native
Victorian Riverina present native
Gippsland Plain present native
Goldfields present native
Central Victorian Uplands 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

State distribution

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