Ironstone Grevillia (Grevillia elongata) Interim Recovery Plan 2003-2008

Interim Recovery Plan no. 131
Gillian Stack and Val English
Department of Conservation and Land Management, WA, 2003

4. Term of plan

This Interim Recovery Plan will operate from March 2003 to February 2008 but will remain in force until withdrawn or replaced.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:

Anne Cochrane    Manager, the Department's Threatened Flora Seed Centre
Amanda Shade    Horticulturalist, Botanic Garden and Parks Authority
Meredith Spencer    Conservation Officer, The Department's Blackwood District
Leonie Monks    Research Scientist, The Department's Science Division

Thanks also to the staff of the W.A. Herbarium for providing access to Herbarium databases and specimen information, and the Department's Wildlife Branch for assistance.

6. References

Brown, A., Thomson-Dans, C. and Marchant, N. (Eds). (1998) Western Australia's Threatened Flora. Department of Conservation and Land Management, Western Australia.

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.

Department of Conservation and Land Management (1998) Western Australian Herbarium FloraBase - Information on the Western Australian Flora. Perth, Western Australia. http://www.calm.wa.gov.au/science/

English, V. (1999). Shrubland Association on Southern Swan Coastal Plain Ironstone (Busselton Area) (Southern Ironstone Association), Draft Interim Recovery Plan. Department of Conservation and Land Management, Western Australia.

English, V. and Blyth, J. (1997). Identifying and Conserving Threatened Ecological Communities in the South West Botanical Province. Project N702, Final Report to Environment Australia. Department of Conservation and Land Management. Perth, Western Australia.

Gibson, N., Keighery, B., Keighery, G., Burbidge, A. and Lyons, M. (1994). A floristic survey of the Southern Swan Coastal Plain. Unpublished report for the Australian Heritage Commission prepared by Department of Conservation and Land Management and the Conservation Council of Western Australia (Inc.).

Murray, D. (ed). (1997). Control of Phytophthora and Diplodina Canker in Western Australia. Final Report to the Threatened Species and Communities Unit, Biodiversity Group Environment Australia prepared by Department of Conservation and Land Management, Western Australia.

Olde, P.M. and Marriott, N.R. (1994). The Grevillea Book 1. Kangaroo Press, Kenthurst N.S.W.

Olde, P.M. and Marriott, N.R. (1995). The Grevillea Book 2: 142-143. Kangaroo Press, Kenthurst N.S.W.

Phillimore, P. Stack, G. and English, V. (1999) Interim Recovery Plan number 54, 1999-2002 Grevillea elongata. Department of Conservation and Land Management, Perth.

Tille, P. J. and Lantzke, N. C. (1990a). Land Resources of Busselton-Margaret River-Augusta. Busselton-Dunsborough Map. Western Australian Department of Agriculture. Perth.

Tille, P. J. and Lantzke, N. C. (1990b). Land Resources of Busselton-Margaret River-Augusta. Margaret River Map. Western Australian Department of Agriculture. Perth.

World Conservation Union (2000) IUCN red list categories prepared by the IUCN Species Survival Commission, as approved by the 51st meeting of the IUCN Council. Gland, Switzerland.

7. Taxonomic description

Olde, P. M. and Marriott, N. R. (1995). The Grevillea Book 2: 142-143. Kangaroo Press, Kenthurst N.S.W.

Shrub 1.5-2 m high, 2-2.5 m wide. Branchlets red, erect, glabrous or sparsely silky, terete with longitudinal ribbing. Leaves 2.5-5 cm long, glabrous, divaricately tripartite to pinnatipartite, sometimes with some or all lobes again bi- or tri-partite, sessile or shortly petiolate, the first lobe 12-30 mm from leaf base; leaf lobes often of uneven length, 5-30 mm long, c. 0.8 mm wide, subulate, trigonous, pungent; upper surface smooth, venation obscure; lower surface, bisulcate with midvein prominent; texture firmly papery to leathery. Conflorescence terminal or axillary, sessile or shortly pedunculate, simple or few-branched; unit conflorescence 2-5.5 cm long, open, cylindrical; development acropetal; peduncle tomentose; rachis c. 1 mm wide, sometimes sparsely pubescent at the base, otherwise glabrous; bracts 2.8-3.4 mm long, 3-4 mm wide, imbricate, ovate, glabrous except ciliate margin, persistent almost to anthesis; pedicels 2.2-3.2 mm long, glabrous; torus 0.3 mm wide, oblique at c. 10-15º. Flower colour: perianth and style white throughout, the bracts cream. Flowers glabrous; perianth 3.5 mm long, 0.5 mm wide, actinomorphic, oblong-obovate constricted below limb, erect; all tepals separating and rolling back at anthesis; limb 1 mm long, 1.2 mm wide; pistil 4.5 mm long; stipe 1.2 mm long, flexuose, filamentous; ovary 1 mm long, globose; style constricted just above ovary, dilating abruptly to 0.5 mm thick, gradually tapering to 0.3 mm wide at base of pollen presenter; pollen presenter 0.7 mm high 0.4 mm wide at base, erect with base slightly oblique, faintly rimmed, truncate-conical to subcylindrical. Fruit 8 mm long, 3.5 mm wide, 4 mm deep, oblique, rugulose; pericarp 0.2 mm thick at centre face of the suture. Seed not seen.

Addendum

Ironstone Grevillea (Grevillea elongata) 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.