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Species profile—Pomaderris clivicola

Classification

Plantae (plants) → Equisetopsida (land plants) → RhamnaceaePomaderris clivicola

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Species details

Kingdom
Plantae (plants)
Class
Equisetopsida (land plants)
Family
Rhamnaceae
Scientific name
Pomaderris clivicola E.M.Ross
WildNet taxon ID
9230
Nature Conservation Act 1992 (NCA) status
Endangered
Environment Protection and Biodiversity Conservation Act 1999 (EPBC) status
Vulnerable
Back on Track (BoT) status
High
Conservation significant
Yes
Confidential
No
Endemicity
Native
Pest status
Nil
Short Notes
BRI 470984
Description
Pomaderris clivicola, is a multi-stemmed shrub 3 to 4 m high with tessellated bark at the base of the plant. The smooth stems are ascending and purplish-brown with many lenticels (pore structures shaped like lenses). The branchlets are slender and densely hairy but with sparser hairs along the twig. The leaves are ovate and are 15 to 32 mm long and 6 to 12 mm wide, occasionally smaller, the apex of the leaf tapers to a blunt or sometimes acute point. The midrib is sunken above with 1 to 2 pairs of primary lateral veins slightly sunken above, others obscure, midrib raised below, 4 to 8 primary lateral veins visibly on each side of the midrib at an angle of 45 to 60 degrees to the midrib, raised, looping towards the margin. The leaf surface above is very dense velvety because of stellate (star shaped) trichomes about 0.1 mm long. The surface below is very densely pubescent with simple curved trichomes about 0.2 mm long, overlain by a moderate indumentum of simple straight trichomes 0.5 to 0.7 mm long. The petioles are 2.5 to 4.5 mm long with the indumentum same as the twigs. The stipules are narrowly triangular, 2 to 3 mm by 0.6 to 0.75 mm. The flowers occur in small terminal panicles. The flower sepals are yellow to cream inside and the petals are absent. The fruits are capsules that are about 2 mm long, round and covered in hairs.
Pomaderris clivicola is similar to P. cinerea, but differs in having ovate leaves with long hairs overlying the short dense curved hairs on the underside of the leaf, and a hairless style. It is also similar to P. tropica but differs in having smaller leaves, a sparser covering of long hairs on the lower leaf surface, shorter sepals and longer staminal filaments (Ross, 1990).
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Distribution
Pomaderris clivicola occurs in a restricted area in south-eastern Queensland, where it is known only from three localities: Binjour Plateau near Gayndah, Walla Range near Coalstoun Lakes, and near Proston. It has a distributional range of about 50 km. The larger population is found at Walla Range and consists of around 1600 plants on freehold land. The smaller population was recorded in 1990 at Binjour Plateau, and consists of about 50 plants on a road verge and adjacent freehold land (Ross, 1990).
Distributional limits
-25.5545717, 151.4505555
-26.122113, 151.8588485
Range derivation
Range derived from extent of the taxon's verified records
Habitat
Pomaderris clivicola occurs in semi-evergreen vine thickets or tall open forests with vine thicket understorey on slopes or plateaux, in red volcanic soils. The open forests can have an upper canopy of Eucalyptus cloeziana and Corymbia citriodora with an open understorey of semi-evergreen vine thicket species, such as Owenia venosa, Zanthoxylum brachyacanthum, Alstonia constricta and Caesalpinia scortechinii (Queensland Herbarium, 2012) .
Reproduction
Flowering occurs from December to March, and in August. Fruits in January, March and June.
Threatening processes
The main identified threats to Pomaderris clivicola are the spread of the introduced grass green panic (Megathyrsus maximus) by direct competition and by increasing fuel loads with a subsequent change in the fire regime. In addition, cattle at the Walla site have caused damage to mature plants and may suppress seedling establishment (Thomas and Singh, 1999).
The main potential threats to P. clivicola include roadwork and maintenance, and changed fire regimes (DERM, 2010; DSEWPC, 2012).
Status notes
Pomaderris clivicola is listed as Endangered under the Queensland Nature Conservation Act 1992 and Vulnerable under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999
Management recommendations
Regional and local priority actions to support the recovery of Pomaderris clivicola are outlined by DSEWPC (2012). A summary of these include: avoid habitat loss, disturbance and modification (e.g. monitor known populations to identify key threats; identify populations of high conservation priority); control invasive weeds (e.g. identify and remove weeds in the local area, including Green Panic, which could become a threat to P. clivicola); increase conservation information (raise awareness of Pomaderris clivicola in the local community); avoid trampling, browsing and grazing (e.g. develop and implement a stock management plan for roadside verges, prevent grazing pressure at known sites through exclusion fencing or other barriers); and manage fire (develop and implement a suitable fire management strategy for P. clivicola).
Notes
Occurs in the following Queensland pastoral districts: Burnett, Wide Bay.
References
Department of Sustainability, Environment, Water, Population and Communities (DSEWPC) (2012). Pomaderris clivicola in Species Profile and Threats Database, Department of Sustainability, Environment, Water, Population and Communities, Canberra.
Queensland Department of Environment and Resource Management (DERM) (2010). Burnett Mary Natural Resource Management Region Back on Track Actions for Biodiversity. Department of Environment and Resource Management, Brisbane.
Queensland Herbarium (2012). Specimen label information. Queensland Herbarium. Accessed 20/03/2012.
Ross, E.M. (1990). Pomaderris Labill. (Rhamnaceae) in Queensland, 1, Austrobaileya 3 (2): 309-316.
Thomas, M.B. and Singh, S. (1999). BRI file No. 900P, Field survey and report on the endangered species Pomaderris clivicola, Queensland Herbarium, Environmental Protection Agency, Queensland.
Profile author
Ronald Booth (04/06/2012)

Other resources

Species Profile and Threats Database (SPRAT)
The Australasian Virtual Herbarium (AVH)
Atlas of Living Australia

Data source

This profile data is sourced from the QLD Wildlife Data API using the Get species by ID function used under CC-By 4.0
https://apps.des.qld.gov.au/species/?op=getspeciesbyid&taxonid=9230

This information is sourced from the WildNet database managed by the Queensland Department of Environment and Science.

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Licence
Creative Commons Attribution 4.0 International (CC BY 4.0)
Last updated
7 September 2021
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