National recovery plan for the Cape Spider Orchid (Caladenia caesarea subsp. maritima)
Department of Environment and Conservation, Western Australia
- National recovery plan for the Cape Spider Orchid (Caladenia caesarea subsp. maritima) (PDF - 183 KB) | (RTF - 370 KB)
Caladenia caesarea subsp. maritima was declared as Rare Flora in 1991 under the Western Australian Wildlife Conservation Act 1950 and was ranked as Critically Endangered (CR) under World Conservation Union (IUCN 1994) Red List criteria B1+2c; C2a, as there were less than 250 mature individuals known at that time and as there was continuing decline in quality of habitat and number of mature plants. However, as additional mature plants have since been found and there is no observable decline, the species no longer meets CR based on the above criteria. It is therefore proposed in Recovery Action 2 that the Threatened Species Scientific Committee (TSSC) amend the ranking to Vulnerable (VU) D1. The subspecies is listed as Endangered (EN) under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act). The main threats are recreational activities, weed invasion, inappropriate fire regimes and grazing.
Caladenia caesarea subsp. maritima consists of six populations, totalling 1,641 mature plants. Five populations (Populations 1, 2, 3, 4 and 6) are located on lands vested with the Shire of Busselton and one population (Population 5) is located on private property.