Nature conservation

Threatened species

Robertson's Peppermint - 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 robertsonii subsp. hemisphaerica
Conservation status in NSW: Vulnerable
Commonwealth status: Vulnerable
Profile last updated: 20 Oct 2020

Description

Tree to 30 m high, with persistent grey-brown bark on the trunk and larger branches. The bark is shortly fibrous (peppermint-type bark) and shedding in long ribbons. Juvenile leaves opposite, lance-shaped, dull grey-green. Adult leaves alternate, narrow-lanceolate, 7-13 cm long, 0.8-1.5 cm wide, dull grey-green. Flowerheads with more than 11 flowers and a cylindrical stem 5-8 mm long. Buds club-shaped, grey-green, 3-5 mm long. Fruit spherical or pear-shaped, 4-6 mm long.

Eucalyptus robertsonii is distinguished within the Eucalyptus radiata group by the combination of linear to narrow-lanceolate adult and juvenile leaves, glaucous (dull blue green in colour with a whitish bloom) leaves and buds, and (in the type subspecies) the conical calyptra (the cap on the buds of eucalypts). The taxon had previously been included in Eucalyptus radiata and was subsequently regarded as sufficiently distinct to warrant recognition as one of several closely-related and rather narrowly-defined species composing the radiata group.

Distribution

Known only from the central tablelands of NSW, at small disjunct localities from north of Orange to Burraga.

Habitat and ecology

  • Locally frequent in grassy or dry sclerophyll woodland or forest, on lighter soils and often on granite. Usually found in closed grassy woodlands in locally sheltered sites. Habitats include quartzite ridges, upper slopes and a slight rise of shallow clay over volcanics.
  • Associated vegetation includes variously mixed woodlands of Eucalyptus piperita, E. goniocalyx, E. dalrympleana, E. dives, E. mannifera and E. rossii.
  • Flowering period is February to March. Seed is dispersed locally by wind, and there is no dormancy mechanism.
  • Plants resprout from epicormic buds after fire. A specimen from the Mullion Creek locality was observed to be suckering freely from base to crown after fire.
  • Populations are usually highly localised, with trees recorded as frequent in populations.

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
NSW South Western SlopesInland Slopes Predicted None
South Eastern HighlandsBathurst Predicted None
South Eastern HighlandsCrookwell Predicted None
South Eastern HighlandsHill End Known None
South Eastern HighlandsOberon Predicted None
South Eastern HighlandsOrange Known None