Amaranthus muricatus (Moq.) Hieron.

Rough-fruit Amaranth

Pl. Diaph. Fl. Argent. 227 (1882) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Prostrate or weakly ascending, ± glabrous annual. Stems to c. 60 cm long. Leaves subsessile, oblong to narrowly lanceolate, 1–10 cm long, 2–10 mm wide; apex obtuse or emarginate, sometimes shortly mucronate. Inflorescence spicate, sometimes interrupted, with compact clusters of flowers, terminal, simple or branched, mostly 4–10 cm long. Flowers unisexual; bracts ovate, c. two-thirds as long as tepals, bracteoles rudimentary; tepals 5 (occasionally 4 and within same inflorescence), narrowly obovate, c. 2 mm long, acute; stamens 3. Utricle indehiscent, shortly exceeding perianth, flattened-globoid, bullate; seed lenticular, blackish, shiny, c. 1 mm diam. Flowers Nov.–May.

*GipP, *Gold, *MuF, *MuM, *VRiv, *VVP, *Wim. Also naturalised WA, SA, NSW. Native to South America. Occasional on roadsides, vacant paddocks and suburban allotments etc. (e.g. Ouyen, Kerang, Birchip, Bridgewater, Yarrawonga, Melbourne suburbs).

Source: Walsh, N.G. (1996). Amaranthaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne.
Updated by: Val Stajsic, 2018-04-18
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Caryophyllanae
family Amaranthaceae
genus Amaranthus
Higher taxa


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

State distribution

Distribution map
Western Australia
South Australia
New South Wales