Sp. Pl. 45 (1753) APNI
Perennial with slender rhizomes forming globose to ovoid tubers to 10 mm diam., with yellow-brown, smooth to slightly fibrous coat and fine greyish tomentum. Culms triquetrous, smooth or scabrous above, 10–70 cm high, 1–4 mm diam. Leaves not septate-nodulose, longer or shorter than culms, 3–6 mm wide. Inflorescence simple or compound with 5–10 primary branches to 10 cm long; spikes ovoid, to 3 cm long, to 2.5 cm diam., with rachis mostly minutely hispid; involucral bracts leaf-like, lowest 1 or 2 longer than inflorescence. Spikelets flattened, 5–14 per spike, 5–15 mm long, 1.5–2.5 mm wide in side view, 8–16-flowered; rachilla broadly winged, persistent; glumes very obtuse, with 3-nerved sides, yellow to dark golden brown, 2.5–3 mm long, 2.0–2.2 mm wide; stamens 3; style 3-fid. Nut trigonous, obovoid to oblong-obovoid, grey-brown, one-half as long as glume, c. 1.5 mm long, c. 0.8 mm diam. Flowers spring–summer.
*GipP, *VVP. Occasionally naturalised in Qld, NSW. Cosmopolitan but probably native of Mediterranean and Africa. Several collections known from suburban Melbourne (Brunswick South, Elsternwick, Footscray, Hawthorn, East Malvern, Melbourne ), and a single collection from south Gippsland. Growing in ditches and municipal garden beds. A serious weed of tropical and subtropical cultivation in others parts of the world.
Tubers of certain cultivars are eaten as 'Chufa' or 'Tiger Nuts'.
|Bioregion||Occurrence status||Establishment means|
|Victorian Volcanic Plain||present||introduced|
|New South Wales|