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
Listing and Conservation Advices Commonwealth Conservation Advice on Homoranthus porteri (Threatened Species Scientific Committee (TSSC), 2008agq) [Conservation 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].
 
State Listing Status
QLD: Listed as Vulnerable (Nature Conservation Act 1992 (Queensland): July 2012)
Scientific name Homoranthus porteri [55196]
Family Myrtaceae:Myrtales:Magnoliopsida:Magnoliophyta:Plantae
Species author (C.White) Craven & S.R.Jones
Infraspecies author  
Reference Austral. Syst. Bot. 4(3) (1991) 525.
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

Current name: Homoranthus porteri

The population of 300 plants at Mt Mulligan (north-west of Mareeba) previously included with Homoranthus porteri has been elevated to H. clarksonii (Copeland et al. 2011). H. clarksonii differs in having a shorter peduncle (flower stalk) and style (stalk between the ovary and stigma) (Craven & Jones 1991). H. commungi, which occurs as a population of 50 plants near Mt Zero, may also have been previously been included with H. porteri (Copeland et al. 2011).

Homoranthus porteri is an erect shrub growing to 2 m tall. Leaves are opposite, crowded towards the end of the branchlets, linear, 10 mm long, 1.5 mm wide, with a pointed tip and a short stalk (petiole). Flowers occur in pairs at the ends of the branchlets and on stalks 2 mm long. Bracteoles (floral bracts) are 7 mm long, red or creamy-white and persist during flowering. Sepals form a tube with 5 ribs in the upper part, are 6 mm long and have yellow lobes that are deeply sliced (laciniate) for half the length into 5–6 teeth. Petals are yellow, rounded and slightly shorter than the sepals. The style is 20 mm long with a ring of hairs almost at the tip (Craven & Jones 1991; White 1931).

Homoranthus porteri is restricted to north-east Queensland from near Mareeba southwards to near Ravenshoe (Copeland et al. 2011; Craven & Jones 1991). Collections have been made from Mt Emerald (south-west of Atherton), Baal Gammon Mining Lease near Watsonville (west of Herberton), Mt Stewart (east of Herberton), Kaban - Archer Creek area (west of Ravenshoe), Mt Klaatsch, State Forest 754 (north-west of Ravenshoe) and State Forest Reserve 488 (south of Ravenshoe) (Copeland et al. 2011; Queensland Herbarium 2008b). The species was described as 'common' from a collection site at Mt Emerald (RPS 2011).

Homoranthus porteri occurs in shallow soils on a variety of rock types (including rhyolite), usually in woodland or heath. It has been recorded on sandstone pavement, rock outcrops and scree slopes, on the edge of rocky escarpments and rocky hillsides (Copeland et al. 2011; Craven & Jones 1991; Queensland Herbarium 2008b). A survey at Mt Emerald described the species as clearly favouring the edges of rock pavements, entirely restricted to exposed ridge topography and forming almost monospecific thickets (RPS 2011).

Homoranthus porteri flowers and fruits sporadically throughout the year, although primarily in autumn (Copeland et al. 2011).

Homoranthus porteri differs from most other Homoranthus spp. by its tall growth habit, thick leaves and pendulous (hanging down) flowers. It has duller leaves, darker coloured bracteoles (small bracts) and longer styles than H. clarksonii. It has larger flowers, longer leaves, shorter peduncles (flower stems) and much longer sepal laciniae that extend well beyond the petals compared to H. cummingii (Copeland et al. 2011).

Homoranthus porteri has no recorded threats (TSSC 2008agq).

Management documents relevant to Homoranthus porteri are 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
Ecosystem/Community Stresses:Indirect Ecosystem Effects:Restricted geographical distribution (area of occupancy and extent of occurrence) Homoranthus porteri in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage (DEH), 2006lp) [Internet].
Uncategorised:Uncategorised:threats not specified Commonwealth Conservation Advice on Homoranthus porteri (Threatened Species Scientific Committee (TSSC), 2008agq) [Conservation Advice].

Copeland, L.M., L.A. Craven & J.J. Bruhl (2011). A taxonomic review of Homoranthus (Myrtaceae: Chamelaucieae). Australian Systematic Botany. 24:351-374.

Craven, L.A. & S.R. Jones (1991). A Taxonomic Review of Homoranthus and Two New Species of Darwinia (both Myrtaceae, Chamelaucieae). Australian Journal of Systematic Botany. 4(3):513-533.

Queensland Herbarium (2008b). Unpublished data.

RPS (2011). Fauna, Vegetation & Flora Assessment - Proposed Mt Emerald Wind Farm. Prepared by RPS Australia East Pty Ltd. Prepared for Transfield Services Pty Ltd.

Threatened Species Scientific Committee (TSSC) (2008agq). Commonwealth Conservation Advice on Homoranthus porteri. [Online]. Department of the Environment, Water, Heritage and the Arts. Available from: http://www.environment.gov.au/biodiversity/threatened/species/pubs/55196-conservation-advice.pdf.

White, C.T. (1931). Two previously undescribed Queensland Myrtaceae. Proceedings of the Royal Society of Queensland. 43:15-16.

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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). Homoranthus porteri in Species Profile and Threats Database, Department of the Environment, Canberra. Available from: http://www.environment.gov.au/sprat. Accessed Sun, 20 Apr 2014 11:23:15 +1000.