Nature conservation

Threatened species

Square Raspwort - profile

Indicative distribution

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The areas shown in pink and/purple are the sub-regions where the species or community is known or predicted to occur. They may not occur thoughout the sub-region but may be restricted to certain areas. ( click here to see geographic restrictions). The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Haloragis exalata subsp. exalata
Conservation status in NSW: Vulnerable
Commonwealth status: Vulnerable
Gazetted date: 30 May 2014
Profile last updated: 22 Oct 2020


Square Raspwort is a shrub that reaches 1.5 m tall with square, four-ribbed stems. Its leaves are opposite up to the flower clusters (60 - 100 mm long and 13 - 25 mm wide) with coarsely-toothed margins. Its flowers are insignificant; the petals are only about 3 mm long and yellowish-green to reddish, although the spike-like flower cluster may be prominent at the ends of branches. Subspecies exalata differs from subspecies velutina (also listed as vulnerable and occurring in the Grafton to Kempsey area) in having longer, broader and more coarsely toothed leaves. Haloragis exalata subsp. exalata has two varieties: variety exalata and variety laevis. The former has stems and leaves finely rough to touch, dichasia (in which flower branches appear in regular opposite pairs at the ends of stems) 3-7-flowered. Variety laevis has hairless, scaleless stems and leaves and 7-15-flowered dichasia.


Square Raspwort occurs in 4 widely scattered localities in eastern NSW. It is disjunctly distributed in the Central Coast, South Coast and North Western Slopes botanical subdivisions of NSW.

Habitat and ecology

  • Square Raspwort appears to require protected and shaded damp situations in riparian habitats.
  • Flowering specimens in NSW are recorded from November to January.

Regional distribution and habitat

Click on a region below to view detailed distribution, habitat and vegetation information.


Recovery strategies

Activities to assist this species

Information sources

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region
Australian AlpsSnowy Mountains Predicted None
New England TablelandsWalcha Plateau Predicted None
NSW North CoastMummel Escarpment Predicted None
Other StateJervis Bay Territory Predicted None
South East CornerBateman Known None
South East CornerSouth East Coastal Ranges Known None
Sydney BasinCumberland Predicted None
Sydney BasinIllawarra Known None
Sydney BasinJervis Predicted None
Sydney BasinYengo Known None