Hinged Dragon Orchid (Caladenia drakeoides) Interim Recovery Plan 2003-2008

Interim recovery plan no. 141
Andrew Brown, Emma Holland and Kim Kershaw
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This Interim Recovery Plan will operate from June 2003 to May 2008 but will remain in force until withdrawn or replaced.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 still 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:

Claire Welbon    Former Conservation Officer, Merredin District, DCLM
Rebecca Wolstenholm    Former Conservation Officer, Moora District, DCLM
Nick Woolfrey    Former Conservation Officer, Merredin District, DCLM

We would like to thank the staff of the W.A. Herbarium for providing access to Herbarium databases and specimen information, and DCLM's Wildlife Branch for their 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.

DCLM (1992) Policy Statement No. 44 Wildlife Management Programs. Department of Conservation and Land Management, Perth.

DCLM (1994) Policy Statement No. 50 Setting Priorities for the Conservation of Western Australia's Threatened Flora and Fauna. Department of Conservation and Land Management, Perth.

DCLM (1995) Policy Statement No. 29 Translocation of Threatened Flora and Fauna. Department of Conservation and Land Management, Perth.

Hoffman, N. & Brown, A. (1992) Orchids of South West Australia. 2nd Edition. University of Western Australia Press, Nedlands.

Hopper, S., van Leeuwen, S., Brown, A. & Patrick, S. (1990) Western Australia's Endangered Flora. Department of Conservation and Land Management, Western Australia.

Patrick S. J., Brown A. P. & Rose D. (draft) Declared Rare and Poorly Known Flora in the Moora District. Department of Conservation and Land Management, Western Australia.

World Conservation Union (1994). IUCN red list categories prepared by the IUCN Species Survival Commission, as approved by the 40th meeting of the IUCN Council. Gland. Switzerland.

7. Taxonomic description (S.D. Hopper and A. P. Brown, Nuytsia 14: Nom. 1/2 2002)

Caladenia drakeoides differs from other species of Caladenia in its small petals and sepals (to 13-17 mm by 2.5-4 mm) that are scarcely splayed out from the ovary; its labellum on a loosely hinged claw, 5-7 mm long; its small labellum lamina held below the top of the ovary - the abdomen 5-7 mm by 3-4 mm, scarcely curved and shallowly channelled towards the tail, hirsute only on the margins and should calli, the head globular, 1.5-2 mm wide, golden brown with small dark red spots, with a cranial depression and two lateral anterior slight swellings (not antenna-like as in C. barbarossa) and the shoulder calli hump-like, less than 1 mm tall; and its confinements to the margins of salt lakes.

Addendum

Hinged Dragon Orchid (Caladenia drakeoides) 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.