Nasturtium microphyllum Boenn. ex Rchb.

Icon. Fl. Germ. Helv. 1: 15 (1832) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Perennial, decumbent, stoloniferous, growing in mud or shallow water; stems to 60 cm long, hollow, glabrous. Leaves pinnate, mostly to 10 cm long, becoming smaller towards inflorescence, lateral segments round or broadly elliptic, glabrous. Sepals 1.5–3 mm long; petals 4–5 mm long, white; stamens 6. Fruit spreading, narrow-oblong to linear, curved, 15–30 mm long (excluding style), 1–2 mm wide; style up to 1 mm long; pedicels spreading, 9–15 mm long; seeds in 1 row (sometimes irregularly 2 rows) per locule, coat reticulate with c. 100–150 depressions per face.

*Brid, *CVU, *EGU, *GipP, *Glep, *Gold, *HSF, *MonT, *SnM, *VVP, *WaP. Also naturalised SA, Qld, NSW, Tas. Flowers mostly summer.

The number of depressions in the seed surface is the most reliable character for separating N. microphyllum from N. officinale, however, N. microphyllum tends to have longer fruits with seeds in 1, or 2 somewhat irregular, rows.

See note under N. officinale regarding hybrids between these two species.

Source: Entwisle, T.J. (1996). Brassicaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne (as Rorippa microphylla (Boenn. ex Rchb.) Hyl.).
Updated by: Val Stajsic, 2019-01-07
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Rosanae
order Brassicales
family Brassicaceae
genus Nasturtium
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Nasturtium microphyllum in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Nasturtium microphyllum in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Glenelg Plain present naturalised
Bridgewater present naturalised
Victorian Volcanic Plain present naturalised
Gippsland Plain present naturalised
Warrnambool Plain present introduced
Goldfields present naturalised
Central Victorian Uplands present naturalised
East Gippsland Uplands present naturalised
Highlands-Southern Fall present naturalised
Monaro Tablelands present naturalised
Snowy Mountains present naturalised

State distribution

Distribution map
South Australia
New South Wales
Australian Capital Territory