Nature conservation

Threatened species

Commersonia rosea - profile

Indicative distribution


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Key:
known
predicted
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: Commersonia rosea
Conservation status in NSW: Endangered
Commonwealth status: Endangered
Gazetted date: 12 Nov 2004
Profile last updated: 17 Sep 2019

Description

A prostrate shrub 0.1 - 0.3 m high, producing trailing branches up to 60 cm long. Branches are densely stellate-hairy (especially on young growth), becoming almost hairless and channelled on older branches. The leaves have a petiole 4-10 mm long, persistent linear stipules, 6-9 mm long and 1 mm wide, and blades that are narrowly oblong to narrowly elliptic, 24-70 mm long, 8-17 mm wide, and stellate-hairy on both surfaces. The inflorescence is a cyme of 1-3 flowers with densely stellate-hairy stalks 2-8 mm long. Flowers have 5 pink, 3-lobed petals. Fruit capsules are globe-shaped, lime-green turning pale brown with age, 10-16 mm diameter, and densely covered in 2-4 mm long bristles. A recent review of the genera Commersonia and Rulingia indicates that they are in need of taxonomic changes, and the name Androcalva rosea has been proposed for this species.

Distribution

Only known from four localities in the Sandy Hollow district of the upper Hunter Valley, New South Wales, all within an eight kilometre radius of Sandy Hollow. No populations are within a conservation reserve. Commersonia rosea occupies relatively small areas at its known sites and has a total population of less than 200 plants.

Habitat and ecology

  • Observed flowering in August, November, January and February.
  • Occurs on skeletal sandy soils in scrub or heath vegetation with occasional emergents of Narrow-leaved Ironbark (Eucalyptus crebra), Black Cypress Pine (Callitris endlicheri) or E. caleyi subsp. caleyi.
  • Given that fire had occurred within 6 - 12 months prior to the location of this species at three of the four sites, it may be a fire ephemeral (that is it appears after fires).

Regional distribution and habitat

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


Threats

Recovery strategies

Activities to assist this species

Information sources

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region
Sydney BasinKerrabee Known None