Nature conservation

Threatened species

Square-stemmed Olax - 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: Olax angulata
Conservation status in NSW: Vulnerable
Commonwealth status: Vulnerable
Profile last updated: 21 Nov 2018


Square-stemmed Olax is an upright shrub, which may be parasitic on the roots of other plants. Its stiff branches are often yellowish in colour, with prominent U-shaped ridges. The branchlets are square in cross-section and are yellow-green or blue-green like the leaves. The leaves are stalkless, arranged alternately, and are smooth, brittle and oval-shaped with a tiny point at the end. Small white flowers are often present with the fleshy, egg-shaped, one-seeded fruits.


Known from a small area east of Grafton, near Minnie Water and Wooli, mainly in Yuraygir National Park and on nearby leasehold land. Locally common. Also known from an area north of Grafton in Banyabba Nature Reserve, Fortis Creek National Park and adjoining freehold land.

Habitat and ecology

  • Low-lying coastal heaths and heathy woodlands on sandy soils near swamps, often in association with Wallum Banksia (Banksia aemula).

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
NSW North CoastYuraygir Known None
OceanTweed-Moreton Known None
South Eastern QueenslandClarence Lowlands Known None
South Eastern QueenslandClarence Sandstones Known None