Oxalis radicosa A.Rich.

Stout-rooted Wood-sorrel

Tent. Fl. Abyss. 2: 123 (1847) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Herb with stems erect or ascending, sometimes creeping but not rooting at nodes, to 30 cm long, stems moderately to densely hairy, the hairs simple, usually and predominantly spreading, with our without underlying shorter retrorse hairs; taproot usually stout and woody; bulbils absent. Leaves cauline, alternate, 3-foliolate; leaflets sessile, obcordate, 2–6(–15) mm long, 3–8(–15) mm wide, bilobed, green, glabrous to pubescent above, pubescent below, margins ciliate, sinus to c. half leaflet length, lobes obovate, apices rounded, 2–8 mm apart; petioles usually 4–7 cm long, with mostly spreading hairs; stipules inconspicuous, to 1–1.5 mm long, keeled, abruptly tapering to petiole, ciliate. Inflorescences axillary, flowers 2–4 per peduncle, held just above or well above leaf level; peduncles usually longer than leaves, covered with curved hairs; pedicels erect or deflexed at maturity (but capsules erect). Sepals oblong, 3–5 mm long, often ciliate. Petals 7–12 mm long, yellow. Capsule 7–22 mm long, 2–3 mm diam., cylindrical, usually densely retrorse-hairy, rarely with occasional spreading septate hairs mixed with retrorse hairs; seeds 1.3–1.7 mm long, transversely ribbed, grooves V-shaped, brown, uniformly coloured, ribs without greyish or whitish lines or blotches. Flowers Sep.–Apr.

CVU, EGU, GipP, Gold, GGr, HFE, HSF, MonT, MuF, NIS, OtP, OtR, VRiv, VVP, Wim. All States. Pacific islands, southern Asia, tropical Africa, Madagascar. A widespread species in Victoria, usually found in grasslands, grassy woodlands, and rocky sites in dry open forest. In Victoria it occurs from Corack in the Wimmera, to Mt Cottrell (west of Melbourne), Kilmany in South Gippsland, Pine Mountain in north-eastern Victoria, extending to Buldah in East Gippsland.

Oxalis radicosa can be recognised by its usually erect or ascending habit, presence of a stout taproot, the usually densely hairy stems, and inconspicuous keeled stipules, but see notes for O. chnoodes. O. radicosa may also be confused with O. perennans which has sparsely to densely antrorse-hairy, rarely glabrescent stems, and conspicuous stipules, to c. 3 mm long.

Source: Conn, B.J.; Jeanes, J.A.; Richards, P.G. (1999). Oxalidaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 4, Cornaceae to Asteraceae. Inkata Press, Melbourne.
Updated by: Val Stajsic, 2020-03-24
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Rosanae
order Oxalidales
family Oxalidaceae
genus Oxalis
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Oxalis radicosa in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Oxalis radicosa in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Wimmera present native
Victorian Volcanic Plain present native
Victorian Riverina present native
Murray Fans present native
Gippsland Plain present native
Otway Plain present native
Goldfields present native
Central Victorian Uplands present native
Greater Grampians present native
Northern Inland Slopes present native
East Gippsland Uplands present native
Highlands-Southern Fall present native
Otway Ranges present native
Monaro Tablelands present native
Highlands-Far East present native

State distribution

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