Biodiversity

Species Profile and Threats Database


For information to assist proponents in referral, environmental assessments and compliance issues, refer to the Policy Statements and Guidelines (where available), the Conservation Advice (where available) or the Listing Advice (where available).
 
In addition, proponents and land managers should refer to the Recovery Plan (where available) or the Conservation Advice (where available) for recovery, mitigation and conservation information.

EPBC Act Listing Status Listed as Vulnerable as Eucalyptus robertsonii subsp. hemisphaerica
Listing and Conservation Advices Commonwealth Conservation Advice on Eucalyptus robertsonii subsp. hemisphaerica (Threatened Species Scientific Committee, 2008oz) [Conservation Advice].
 
Commonwealth Listing Advice on Eucalyptus robertsonii subsp. hemisphaerica (Robertson's Peppermint) (Threatened Species Scientific Committee (TSSC), 2012be) [Listing Advice].
 
Recovery Plan Decision Recovery Plan not required, included on the Not Commenced List (1/11/2009).
 
Adopted/Made Recovery Plans
Federal Register of
    Legislative Instruments
Declaration under s178, s181, and s183 of the Environment Protection and Biodiversity Conservation Act 1999 - List of threatened species, List of threatened ecological communities and List of threatening processes (Commonwealth of Australia, 2000) [Legislative Instrument] as Eucalyptus robertsonii subsp. hemisphaerica.
 
State Government
    Documents and Websites
NSW:Robertson's Peppermint - profile (NSW Department of Environment, Climate Change and Water (NSW DECCW), 2005ed) [Internet].
State Listing Status
NSW: Listed as Vulnerable (Threatened Species Conservation Act 1995 (New South Wales): December 2013 list) as Eucalyptus robertsonii subsp. hemisphaerica
Scientific name Eucalyptus robertsonii subsp. hemisphaerica [56223]
Family Myrtaceae:Myrtales:Magnoliopsida:Magnoliophyta:Plantae
Species author  
Infraspecies author L.A.S.Johnson & K.D.Hill
Reference Johnson, L.A.S. & Hill, K.D. (1990) New taxa and combinations in Eucalyptus and Angophora (Myrtaceae). Telopea 4(1): 101, fig. 34 (map) [tax. nov.]
Other names Eucalyptus robertsonii hamaespherica [67293]
Distribution map Species Distribution Map

This is an indicative distribution map of the present distribution of the species based on best available knowledge. See map caveat for more information.

Illustrations Google Images

Scientific name: Eucalyptus robertsonii subsp. hemisphaerica

Common name: Robertson's Peppermint

This subspecies is distinguished from Eucalyptus robertsonii by the hemispherical calyptra (Johnson & Hill 1990).

Robertson's Peppermint is a tree up to 30 m in height, with grey to grey-brown, shortly fibrous bark which is persistent on the trunk and larger branches (Benson & McDougall 1998).

Juvenile leaves are opposite, lanceolate (lance shaped) and dull green. Adult leaves are alternate, narrow-lanceolate and dull-green.

Flower heads occur in inflorescences of more than 11 flowers and sit at the end of cylindrical stems. Flowers are white or cream in colour.

Robertson's Peppermint is found east and south-east of Orange, NSW. It is known to occur north and north-east of Mullion Creek, Glengowan, Upper Meroo, west of Bocoble Mountain and Burraga (Johnson & Hill 1990). There are still extant records of the species from Cudgegong, where it occurs along the old railway line (G Robertson cited in NSW NPWS 2000, pers. comm.).

This subspecies is locally common, with a limited extent of occurrence.

Robertson's Peppermint is found in closed grassy woodland in locally sheltered sites (Johnson & Hill 1990). Associated species include Red Stringy Bark (Eucalyptus macrorhyncha), Scribbly Gum (E. rossii), Broad-leaved Peppermint (E. dives), Brittle Gum (E. mannifera) and Mountain Gum (E. dalrympleana) (Benson & McDougall 1998).

It is found on lighter soils, often on granite or quartzite, which are often nutrient-poor (Benson & McDougall 1998).

The flowering period of Robertson's Peppermint is February to March, with seed dispersal occurring via wind or gravity (NSW DECCW 2005ed).

There is no known seed dormancy mechanism. Plants will resprout from epicormic buds in response to fire (Benson & McDougall 1998).

Robertson's Peppermint can be distinguished from the Narrow-leaved Peppermint (Eucalyptus radiata subsp. robertsonii) by the hemispherical calyptra (cap on the tip of the buds). The buds of the former have an overall club shape (Harden 1991).

The known threats to the Robertson's Peppermint are (TSSC 2012be):

  • Senescence and lack of regeneration; particularly in older stands with little evidence of juvenile recruitment.
  • Clearing; due to the highly localised nature of the subspecies, stands which are cleared or degraded may represent a significant proportion of the total population.
  • Trampling and browsing by stock.

An indirect threat is inappropriate fire regimes, which may be contributing to low recruitment rates (TSSC 2012be). As some populations contain small numbers of plants, they may be at risk of a genetic bottleneck or other stochastic events (NSW DECCW 2005ed).

Documents relevant to the management of the Robertson's Peppermint can be found at the start of the profile.

The following table lists known and perceived threats to this species. Threats are based on the International Union for Conservation of Nature and Natural Resources (IUCN) threat classification version 1.1.

Threat Class Threatening Species References
Agriculture and Aquaculture:Agriculture and Aquaculture:Land clearing, habitat fragmentation and/or habitat degradation Commonwealth Conservation Advice on Eucalyptus robertsonii subsp. hemisphaerica (Threatened Species Scientific Committee, 2008oz) [Conservation Advice].
Biological Resource Use:Logging and Wood Harvesting:Habitat loss, modification and degradation due to timber harvesting Commonwealth Conservation Advice on Eucalyptus robertsonii subsp. hemisphaerica (Threatened Species Scientific Committee, 2008oz) [Conservation Advice].
Ecosystem/Community Stresses:Ecosystem Degradation:Habitat deterioration due to soil degradation and erosion Commonwealth Conservation Advice on Eucalyptus robertsonii subsp. hemisphaerica (Threatened Species Scientific Committee, 2008oz) [Conservation Advice].
Ecosystem/Community Stresses:Indirect Ecosystem Effects:Restricted geographical distribution (area of occupancy and extent of occurrence) Eucalyptus robertsonii subsp. hemisphaerica in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage (DEH), 2006jf) [Internet].
Natural System Modifications:Fire and Fire Suppression:Inappropriate and/or changed fire regimes (frequency, timing, intensity) Commonwealth Conservation Advice on Eucalyptus robertsonii subsp. hemisphaerica (Threatened Species Scientific Committee, 2008oz) [Conservation Advice].
Species Stresses:Indirect Species Effects:Low genetic diversity and genetic inbreeding Commonwealth Conservation Advice on Eucalyptus robertsonii subsp. hemisphaerica (Threatened Species Scientific Committee, 2008oz) [Conservation Advice].
Species Stresses:Indirect Species Effects:Poor recruitment (regeneration) and declining population numbers Commonwealth Conservation Advice on Eucalyptus robertsonii subsp. hemisphaerica (Threatened Species Scientific Committee, 2008oz) [Conservation Advice].

Benson, D. & L. McDougall (1998). Ecology of Sydney plant species: Part 6 Dicotyledon family Myrtaceae. Cunninghamia. 5(4):809-987. Sydney: NSW Royal Botanic Gardens.

Harden, G.J. (ed.) (1991). Flora of New South Wales, Volume Two. Kensington, NSW: University of NSW Press.

Johnson, L.A.S. & K.D. Hill (1990). New taxa and combinations in Eucalyptus and Angophora (Myrtaceae). Telopea. 4(1).

NSW Department of Environment, Climate Change and Water (NSW DECCW) (2005ed). Robertson's Peppermint - profile. [Online]. Available from: http://www.threatenedspecies.environment.nsw.gov.au/tsprofile/profile.aspx?id=10311.

NSW National Parks & Wildlife Service (NSW NPWS) (2000). Personal communication. Sydney: NSW NPWS.

Threatened Species Scientific Committee (TSSC) (2012be). Commonwealth Listing Advice on Eucalyptus robertsonii subsp. hemisphaerica (Robertson's Peppermint). [Online]. Department of Sustainability, Environment, Water, Population and Communities. Canberra, ACT: Department of Sustainability, Environment, Water, Population and Communities. Available from: http://www.environment.gov.au/biodiversity/threatened/species/pubs/56223-listing-advice.pdf.

EPBC Act email updates can be received via the Communities for Communities newsletter and the EPBC Act newsletter.

This database is designed to provide statutory, biological and ecological information on species and ecological communities, migratory species, marine species, and species and species products subject to international trade and commercial use protected under the Environment Protection and Biodiversity Conservation Act 1999 (the EPBC Act). It has been compiled from a range of sources including listing advice, recovery plans, published literature and individual experts. While reasonable efforts have been made to ensure the accuracy of the information, no guarantee is given, nor responsibility taken, by the Commonwealth for its accuracy, currency or completeness. The Commonwealth does not accept any responsibility for any loss or damage that may be occasioned directly or indirectly through the use of, or reliance on, the information contained in this database. The information contained in this database does not necessarily represent the views of the Commonwealth. This database is not intended to be a complete source of information on the matters it deals with. Individuals and organisations should consider all the available information, including that available from other sources, in deciding whether there is a need to make a referral or apply for a permit or exemption under the EPBC Act.

Citation: Department of the Environment (2014). Eucalyptus robertsonii subsp. hemisphaerica in Species Profile and Threats Database, Department of the Environment, Canberra. Available from: http://www.environment.gov.au/sprat. Accessed Sat, 12 Jul 2014 08:12:21 +1000.