Blunt wattle (Acacia aprica) Interim Recovery Plan 2003-2008
Interim Recovery Plan No. 152
Ben Bayliss
Department of Conservation and Land Management, WA, 2003
4. Term of plan
This Interim Recovery Plan will operate from June 2003 to May 2008 but will remain in force until withdrawn or replaced. If the taxon is ranked Critically Endangered after five years, the need to review this IRP or to replace it with a full Recovery Plan will be determined.
5. Acknowledgements
The following people have provided assistance and advice in the preparation of this Interim Recovery Plan:
Mr Andrew Crawford
Technical Officer, the Department's Threatened Flora Seed Centre
Ms Amanda Shade
Propagator, Kings Park and Botanic Garden
Dr Colin Yates
Senior Research Scientist, the Department's Science Division
Ms Leonie Monks
Research Scientist, the Department's Science Division
Ms Gillian Stack
Project Officer, the Department's WA Threatened Species and Communities Unit
Ms Val English
Ecologist, the Department's WA Threatened Species and Communities Unit
Ms Gina Broun
Conservation Officer, the Department's Moora District
Thanks also to Science Division staff for providing access to Herbarium databases and specimen information, and the staff of the Department's Wildlife Branch for assistance.
13. References
Brown, A., Thomson-Dans, C. and Marchant, N. (eds.) (1998). Western Australia's Threatened Flora. Department of Conservation and Land Management, Western Australia.
Cavanagh, T. (1987). Germination of Hard-seeded Species (Order Fabales). Pp. 58-70 in P.L. Langkamp (ed.). Germination of Australian Native Plant Seed. Inkata Press, Melbourne.
Department of Conservation and Land Management (1992). Policy Statement No. 44 Wildlife Management Programs. Perth, Western Australia.
Department of Conservation and Land Management (1994). Policy Statement No. 50 Setting Priorities for the Conservation of Western Australia's Threatened Flora and Fauna. Perth, Western Australia.
Department of Conservation and Land Management (1995). Policy Statement No. 29 Translocation of Threatened Flora and Fauna. Perth, Western Australia.
IUCN (2000). IUCN Red List Categories prepared by the IUCN Species Survival Commission, as approved by the 51st meeting of the IUCN Council. Gland, Switzerland.
Maslin, B.R. and Chapman, A.R. (1999) Acacia miscellany 19. The taxonomy of some Western Australian species of Acacia Section Juliflorae with 4-merous flowers (Leguminosae: Mimosoideae). Nuytsia Vol.12, No 3. pp 469-486.
Stack, G. and English, V. (1999). Interim Recovery Plan number 22 Acacia aprica 1999-2002. Department of Conservation and Land Management. Perth, Western Australia.
Yates, C.J. and Broadhurst, L.M. (2002) Assessing limitations on population growth in two critically endangered Acacia taxa. Biological Conservation Vol 108 pp13 - 26.
14. Taxonomic description
Maslin, B.R. and Chapman, A.R. (1999) Nuytsia Vol.12, No 3
Acacia aprica Maslin & A.R. Chapman, sp. nov.Diffuse, open shrub 1.5m tall, dividing near ground level into 2 to many spreading main stems, the upper branches often spreading +/- horizontally, Bark dark grey, smooth except fine fissures towards base of stems. Branchlets slightly flexuose, not or scarcely pendulous, red-brown, densely silvery sericeous between the often-resinous ribs, Stipules not seen. Phyllodes terete to sub-quadrangular, 5-11 cm long, rarely very few to 14cm, 1-1.5mm diam., rather stout and sparse, moderately to strongly incurved or sometimes shallowly serpentinous, silvery sericeous when young (especially between nerves), commonly glabrous at maturity except appressed hairs at base, dull green to grey-green; longitudinal nerves 8, broad (0.2-0.3mm wide), +/-flat-topped, not or scarcely raised and separated by an equal number of shallow and narrow yet distinct, dark longitudinal furrows, the nerves of +/- uniform width and prominence; apex acute with a dark brown point; pulvinus very indistinct. Gland situated on upper surface of phyllode 1-3mm above base, obscure, slightly swollen. Inflorescence simple. single or paired in axil of phyllode. Heads subglobular to obloid, sessile to subsessile (peduncle to 2mm long, densely hairy), 7-10mm long and 7-8mm wide when dry, densely 40-55-flowered, golden; bracteoles persistent, spathulate, c. 1mm long, with a narrow stipe and a rhomboid, acute, dark lamina. Flowers 4-merous; sepals 1/2 to 2/3 length of petals, c. 1/2 united, the lobes narrow, thickened at apex, dark and puberulent along midrib; petals 1.5-2mm long, viscid without an obvious midrib. Ovary sessile, puberulous; style sub-lateral. Pods linear, shallowly to moderately constricted between seeds, flat, 2.5-6cm long, c. 2mm wide, thinly crustaceous, straight to shallowly curved, red-brown. Silvery sericeous on faces: margins broad, glabrous, yellow or red-brown. Seeds longitudinal, obloid-ellipsoid, 2.5-3mm long, 1.5-2mm wide, 1mm thick, glossy, pale brown mottled yellow (pale yellowish prior to maturity); funicle filiform, expanded into a small, terminal, cream (dry) aril measuring 1/4-1/3 length of seed.
Closely related to A. filifolia which has wispy taller habit and longer, generally thinner phyllodes. Also related to A. arcuatilis and A. lirellata. All three species occur in the Coorow area.
Addendum
Blunt Wattle (Acacia aprica) Interim Recovery Plan 2003-2008
In adopting this plan under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act), the Minister for the Environment and Heritage has approved the following modifications.
Critical Habitat
The plan identifies a broad area as critical habitat, including buffer zones of a set distance around known populations. The Threatened Species Scientific Committee does not necessarily believe that such an area qualifies as habitat critical to the survival of the species, as defined in the EPBC Act.
Recovery Criteria
For the purposes of reviewing this recovery plan under the EPBC Act, the Recovery Criteria are amended to read as follows:
Criteria for success: The number of individuals within populations and/or the number of populations have increased by 10% or more over the period of the plan's adoption under the EPBC Act.
Criteria for failure: The number of individuals within populations and/or the number of populations have decreased by 10% or more over the period of the plan's adoption under the EPBC Act.
Before you download
Some documents are available as PDF files. You will need a PDF reader to view PDF files.
List of PDF readers
If you are unable to access a publication, please contact us to organise a suitable alternative format.
Key
Links to another web site
Opens a pop-up window