Nature conservation

Threatened species

Eucalyptus aggregata population in the Wingecaribee local government area - 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: Eucalyptus aggregata - endangered population
Conservation status in NSW: Endangered Population
Commonwealth status: Not listed
Gazetted date: 30 Aug 2013
Profile last updated: 16 Aug 2018

Description

Black Gum is a small to medium-sized woodland tree growing to 18 m tall. The the bark on the trunk and main branches is dark greyish-black, deeply fibrous or flaky. The bark does not shed annually. Only the uppermost branches and twigs have smooth whitish, cream or greyish bark that sheds yearly. The juvenile leaves are narrow or oval-shaped, dull green and arranged opposite to one another. The adult leaves are slightly curved and round-ended, about 12 cm long and 1 to 2 cm wide. They are glossy dark green and have the same colour on each surface. The buds, flowers and fruits occur in tight clusters of 7; the clusters are on stalks 3 to 4 mm long. The buds are egg-shaped, 3 to 5 mm long and 2 to 3 mm wide. The flowers are white and are followed by gum-nuts which are cone- or cup-shaped, 2 to 4 mm long and 3 to 5 mm wide. The disc on the surface of the gum-nut has processes (valves) which emerge from the disc.

Distribution

This endangered population is located in the Wingecarribee local government area. Three sub populations, comprising less than 100 plants in total, are located in Berrima, Medway and Sutton Forest.

Habitat and ecology

  • Grows in the lowest parts of the landscape.
  • Grows on alluvial soils, on cold, poorly-drained flats and hollows adjacent to creeks and small rivers.
  • Often grows with other cold-adapted eucalypts, such as Snow Gum or White Sallee (Eucalyptus pauciflora), Manna or Ribbon Gum (E. viminalis), Candlebark (E. rubida), Black Sallee (E. stellulata) and Swamp Gum (E. ovata). Black Gum usually occurs in an open woodland formation with a grassy groundlayer dominated either by River Tussock (Poa labillardierei) or Kangaroo Grass (Themeda australis), but with few shrubs.
  • Also occurs as isolated paddock trees in modified native or exotic pastures.
  • Many populations occur on travelling stock reserves, though stands and isolated individuals also occur on private land.
  • None of the three sub populations are protected in conservation reserves

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

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region
Sydney BasinBurragorang Known None
Sydney BasinMoss Vale Known None