Hydrocotyle rivularis H.Eichler ex Henwood

Telopea 17: 218 (2014) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: vulnerable (v)

Prostrate perennial with robust stems, rooting at nodes. Leaf-lamina divided to base into 3 segments, to 30 mm across; segments orbicular, (3–)6–11 mm long, (3–)7–15.5(–20) mm wide, the outer pair bilobed, apex obtuse or rounded, margins with rounded teeth, surfaces glabrous; petiole (10–)50–160 mm long, glabrous; stipules membranous and entire. Umbels simple, leaf-opposed, globose, 3–5 mm diam., 7–10-flowered; flowers pedicillate; flowering pedicels 1–1.8 mm long; peduncle (5–)30–50 mm long. Petals white, occasionally with purple margins. Fruits slightly compressed laterally, 0.9–1 mm long, 0.7–0.8 mm wide; mericarps with acute lateral and dorsal ribs, intermediate ones not raised. Flowers Dec.–Feb.

EGL. Also NSW and ACT. Rare in Victoria where known from montane streams and regularly inundated swamps above 600 m altitude in the Nunniong Plateau-Mt Cobberas area, with an isolated lowland occurrence along the lower Snowy River near Orbost. Mostly growing as a submerged aquatic, occasionally exposed on stream margins or as swamps recede.

Created by: Daniel Ohlsen, 2016-06-08
Updated by: Neville Walsh, 2018-01-08
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 rivularis in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Hydrocotyle rivularis in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
East Gippsland Lowlands present native