Hydrocotyle rugulosa Turcz.

Mallee Pennywort

Bull. Soc. Imp. Naturalistes Moscou 22 (2): 27 (1849) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Slender, erect or ascending, glabrous annual, 2–12 cm high, often tinged dark purple, often branched at base, often almost leafless in fruit. Cotyledons 2.4–3 mm long, c. 1 mm wide, oblong, usually retained until plant in fruit. Leaf-lamina 4–9 mm across, divided to below middle (or, in upper leaves to base) into 3 lobes; lobes entire, 3-dentate or lateral lobes to deeply 3-lobed; petiole 2–15 mm long; stipules membranous, narrow-ovate, fringed, white. Umbels simple, leaf-opposed, globose, 2–3 mm diam., 2–4-flowered; peduncle 2–10 mm long; pedicel to 0.5 mm long. Petals c. 0.5 mm long, white to purple. Fruits flattened, dark, c. 0.9 mm long, c. 1.3 mm wide, surface slightly colliculate; mericarps with very obtuse and thick dorsal and intermediate ribs connected by 2 or 3 thick, blunt transverse ridges with 2–4 deep depressions between them on each side of the dorsal rib, each depression often with a minute white ridge-like protuberance. Flowers spring.

Gold, GGr, LoM, MuM, Wim. Also WA, SA. Confined in Victoria to mallee communities in the north-west, where scattered in open woodland and scrubs in depressions and on sandstone rises.

Source: Duretto, M.F. (1999). Apiaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 4, Cornaceae to Asteraceae. Inkata Press, Melbourne.
Updated by: Daniel Ohlsen, 2017-06-15
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Asteranae
order Apiales
family Araliaceae
genus Hydrocotyle
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Hydrocotyle rugulosa in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Hydrocotyle rugulosa in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present native
Murray Mallee present native
Wimmera present native
Goldfields present native
Greater Grampians present native

State distribution

Distribution map
Western Australia
South Australia