Dysphania ambrosioides (L.) Mosyakin & Clemants

Ukrayins'k. Bot. Zhurn. 59: 382 (2002) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Erect annual to short-lived perennial, odorous with a smell resembling turpentine, to c. 1.3 m high. Young branches with fine cottony hairs. Leaves alternate, petiolate, ovate to narrowly elliptic, 3–12 cm long, 1–5 cm wide, margins with irregular, blunt teeth, glabrous, but lower surface with scattered yellowish resin droplets. Flowers female and bisexual, in small clusters along spike-like branches within a leafy or leafless panicle; bisexual flowers with perianth 5-lobed in upper half, stamens 5 with broad membranous filaments; female flowers with tepals united to near apex and enclosing ripe seed; pericarp loosely covering seed, with a few apical, resin-filled hairs. Seed horizontal or oblique, dark reddish-brown, c. 1 mm diam Flowers mostly Jan.–Apr.

*EGL, *EGU, *GipP, *Gold, *MuF, *OtP, *VRiv, *VVP. Also naturalised WA, SA, Qld, NSW, ACT. Chiefly a riparian weed in Victoria and locally common along the lower Mitchell and Snowy Rivers in the east, occasional near the Murray, Goulburn and Yarra Rivers.

Source: Walsh, N.G. (1996). Chenopodiaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne (as Chenopodium ambrosioides L.).
Updated by: Val Stajsic, 2019-12-18
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Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Dysphania ambrosioides in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Dysphania ambrosioides in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present introduced
Victorian Riverina present naturalised
Murray Fans present introduced
Gippsland Plain present introduced
Otway Plain present naturalised
Goldfields present naturalised
East Gippsland Lowlands present introduced
East Gippsland Uplands present introduced