Trigwell's Rulingia (Rulingis sp. Trigwell Bridge) 2003-2008
Interim recovery plan no. 148
Gillian Stack and Andrew Brown
Department of Conservation and Land Management, WA, 2003
This Interim Recovery Plan will operate from August 2003 to July 2008 but will remain in force until withdrawn or replaced. If the taxon is still ranked Critically Endangered after five years, the need to rewrite this IRP or to replace it with a full RP will be determined.
The following people have provided assistance and advice in the preparation of this Interim Recovery Plan:
Anne Cochrane Manager, DCLM's Threatened Flora Seed Centre
Tom Kenneally Forester, DCLM's Wellington District
Amanda Shade Horticulturalist, Botanic Garden and Parks Authority
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.
Brown, A., Thomson-Dans, C. and Marchant, N. (Eds). (1998) Western Australia's Threatened Flora. Department of Conservation and Land Management, Western Australia.
Marchant, N.G., Wheeler, J. R., Rye, B. L., Bennett, E. M., Lander, N. S. and Macfarlane, T. D. (1987). Flora of the Perth Region. Western Australian Herbarium and Department of Agriculture, Western Australia.
The Department (1992a) Dieback disease hygiene manual. Department of Conservation and Land Management, Western Australia.
The Department (1992b) Policy Statement No. 44 Wildlife Management Programs. Department of Conservation and Land Management, Western Australia.
The Department (1994) Policy Statement No. 50 Setting Priorities for the Conservation of Western Australia's Threatened Flora and Fauna. Department of Conservation and Land Management, Western Australia.
The Department (1995) Policy Statement No. 29 Translocation of Threatened Flora and Fauna. Department of Conservation and Land Management, Western Australia.
The Department (1998) Western Australian Herbarium FloraBase - Information on the Western Australian Flora. Department of Conservation and Land Management, Western Australia. http://www.calm.wa.gov.au/science/
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.
Brown et al. (1998).
Rulingia sp. Trigwell Bridge
This small shrub or undershrub can grow up to 1.5 m high and 1 m wide. Star-shaped hairs are visible. Stipules are deciduous, narrow, with the upper stipules often divided into slender lobes. Leaves are entire. There is a terminal inflorescence of creamy-white flowers. The petals are shorter than or as long as the sepals, with a short broad base embracing the stamens and a linear or broad upper portion known as the ligule.
Trigwell's Rulingia (Rulingia sp. Trigwell Bridge) 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.
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.
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.