Caladenia luteola
Hopper & A.P.Br.
Pays · région · aire protégée · écorégion · biome
Pas d'interactions documentées pour cette espèce.
Liste rouge IUCN
CR · En danger critiquecritères B1ab(iii,v)+2ab(iii,v); C2a(ii)↘Décroissante- Évaluation
- 2022 · v3.1
- Altitude
- – m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
Caladenia luteola is known from 71 plants – one at the Woodanilling sites and 70 at the Katanning site.
At the original Woodanilling site population size has decreased from over 50 plants when it is was first discovered in 1985, to one plant in 2013 and nil plants observed in 2014. Repeated monitoring has shown a decline in observed plants at known sites, however, insufficient information to reliably show rate of decline.
At the Katanning site, there has been a population decline from 216 mature plants in 2011 when a full survey was undertaken, to 70 plants in 2016, despite an additional record of 32 plants in 2012. 98% of mature plants occur at this one location.
This species has been very well surveyed. Members of the Western Australian Native Orchid Study and Conservation Group, the Department of Parks and Wildlife and the former Department of Environment and Conservation have surveyed the original site between 1985–2010. Likewise, both groups have targeted the relatively few remaining areas of suitable habitat specifically searching for this species over the same time frame. Caladenia luteola grows in a habitat well known for its abundance of orchids and, as such, this habitat is extensively surveyed by amateur groups. Given the extensive survey effort and limited extent of remaining habitat, it is likely that current estimates are close to actual population and distribution sizes.
At the original Woodanilling site population size has decreased from over 50 plants when it is was first discovered in 1985, to one plant in 2013 and nil plants observed in 2014. Repeated monitoring has shown a decline in observed plants at known sites, however, insufficient information to reliably show rate of decline.
At the Katanning site, there has been a population decline from 216 mature plants in 2011 when a full survey was undertaken, to 70 plants in 2016, despite an additional record of 32 plants in 2012. 98% of mature plants occur at this one location.
This species has been very well surveyed. Members of the Western Australian Native Orchid Study and Conservation Group, the Department of Parks and Wildlife and the former Department of Environment and Conservation have surveyed the original site between 1985–2010. Likewise, both groups have targeted the relatively few remaining areas of suitable habitat specifically searching for this species over the same time frame. Caladenia luteola grows in a habitat well known for its abundance of orchids and, as such, this habitat is extensively surveyed by amateur groups. Given the extensive survey effort and limited extent of remaining habitat, it is likely that current estimates are close to actual population and distribution sizes.
Menaces identifiées(10 menaces classées CMP-IUCN)
11_2DroughtsWhole (>90%)Ongoing12_1Other threatWhole (>90%)Ongoing2_1_3Agro-industry farmingMinority (<50%)Ongoing3_2Mining & quarryingWhole (>90%)Past, Unlikely to Return4_1Roads & railroadsMinority (<50%)Ongoing5_3_4Unintentional effects: (large scale) [harvest]Whole (>90%)Past, Unlikely to Return6_1Recreational activitiesWhole (>90%)Ongoing7_1_1Increase in fire frequency/intensityMinority (<50%)Ongoing8_1_1Unspecified speciesMinority (<50%)Ongoing9_4Garbage & solid wasteWhole (>90%)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
Caladenia luteola faces a range of ongoing threats outlined below:
Habitat/environmental threats
Anthropogenic threats
Demographic threats
Additionally, biological characteristics of the species are threatening to its survival. The comparatively late flowering period of C. luteola may limit its reproduction. Through a trend of decreased rainfall in south-western Australia (Li et al. 2005) there are likely to be relatively few years where reproduction is possible. Further, nectarless orchids tend to have relatively low levels of fruit set (Phillips et al. 2009).
Habitat/environmental threats
- Weeds
- Salinity
- Low rainfall
- Grazing
- Winter and spring fires
Anthropogenic threats
- Road widening
- Rubbish dumping
- Track access
Demographic threats
- Small population size
- Low fruit set
- Low recruitment
- Declining population size
Additionally, biological characteristics of the species are threatening to its survival. The comparatively late flowering period of C. luteola may limit its reproduction. Through a trend of decreased rainfall in south-western Australia (Li et al. 2005) there are likely to be relatively few years where reproduction is possible. Further, nectarless orchids tend to have relatively low levels of fruit set (Phillips et al. 2009).
Habitats préférentiels (classification IUCN)
1_4Forest - Temperate★
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is listed as Critically Endangered under the Australian Government Environment Protection and Biodiversity Conservation Act 1999.
In Place
Management Recommendations
In Place
- Listed in the Wildlife Management Program - Declared Rare Flora in the Katanning District as Caladenia caesarea subsp. subdita ms.
- Draft Interim Recovery Plan awaiting State approval.
- Protect from Shire works including mechanical disturbance and fire.
- Liaise with private land owners to protect the remnant vegetation on which the species occurs, including through exclusion of stock.
- Liaise with road managers to minimise disturbance to adjacent vegetation when maintaining roads.
- Manage fire in the remnant areas to protect the species and maintain habitat condition.
- Location of additional populations.
Management Recommendations
- Undertake weed control.
- Minimize changes in groundwater levels.
- Establishment of the limiting factors in germination (microhabitat, mycorrhizal).
- Collection of seed and mycorrhizal fungi for ex situ propagation.
- Develop an ex situ collection.
- Establishment of new populations in areas of suitable habitat with appropriate mycorrhizal fungi.
Actions de conservation (3)Conservation Actions Classification Scheme — IUCNExpert
1_2Resource & habitat protection2_2Invasive/problematic species control3_4_2Genome resource bank
Stress écologiques (29)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_3_2Competition2_3_7Reduced reproductive success2_3_8Other2_3_8Other
Priorités de recherche (1)Research Needed Classification — IUCNExpert
1_3Life history & ecology
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Australasian
Systèmes (terrestre/eau douce/marin)
Terrestrial
Formes de croissance
Forb or HerbGeophyte
Références bibliographiques (7)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2022. The IUCN Red List of Threatened Species. Version 2022-2. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 08 December 2022).
- Threatened Species Scientific Committee (TSSC). 2018. Conservation Advice <i>Caladenia luteola</i> lemon spider orchid. Department of the Environment and Energy, Canberra. Available at: <a href="http://www.environment.gov.au/biodiversity/threatened/species/pubs/68713-conservation-advice-15022018.pdf">http://www.environment.gov.au/biodiversity/threatened/species/pubs/68713-conservation-advice-15022018.pdf</a>. (Accessed: 2022).
- Swarts, N.D., Sinclair, E.A., Francis, A. and Dixon, K.W. 2010. Ecological specialisation in the orchid mycorrhizal interaction leads to rarity in the endangered terrestrial orchid <i>Caladenia huegleii</i>. <i>Molecular Ecology</i> 19: 3226–3242.
- Phillips, R.D., Faast, R., Bower, C.C., Brown, G.R. and Peakall, R. 2009. Implications of pollination by food and sexual deception on pollinator specificity, fruit set, population genetics and conservation of <i>Caladenia</i>. <i>Australian Journal of Botany</i> 57: 287-306.
- Li, Y., Cai, W.J. and Campbell, E.P. 2005. Statistical modelling of extreme rainfall in south-west Western Australia. <i>Journal of Climate</i> 18: 852-863.
- Hopper, S.D. and Brown, A.P. 2001. Contributions to Western Australian Orchidology: 2. New taxa and circumscriptions in <i>Caladenia</i> (Spider, Fairy and Dragon Orchids of Western Australia). <i>Nuytsia</i> 14: 27-307.
- Western Australian Herbarium. 1998. FloraBase—the Western Australian Flora. Available at: <a href=" https://florabase.dpaw.wa.gov.au/"> https://florabase.dpaw.wa.gov.au/</a>.
Évaluateurs & contributeurs (4)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Australian Government, Threatened Species Scientific Committee
contributor
Phillips, R., Brown, A.P. & Dixon, K.
evaluator
Rankou, H. & Zimmer, H.
facilitators
Mastroanni, E. & Zimmer, H.
Australian Government, Threatened Species Scientific Committee 2022. Caladenia luteola. The IUCN Red List of Threatened Species 2022: e.T206711750A206712829. Accessed on 05 May 2026.
Répartition mondiale
Aucune observation géoréférencée avec précision suffisante (<10 km) dans GBIF pour cette espèce.
Consulter sur les bases externes
Observations & statuts
Cartographie
Note nomenclaturale & synonymesDétails taxonomiques + synonymes CoLExpert
Note nomenclaturale
TAXREF v18 — INPN/MNHNSynonymes (3)— redirigent vers cette page
- Calonema luteolum(Hopper & A.P.Br.) D.L.Jones & M.A.Clem.
- Calonemorchis luteola(Hopper & A.P.Br.) D.L.Jones & M.A.Clem.
- Jonesiopsis luteola(Hopper & A.P.Br.) D.L.Jones & M.A.Clem.
Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).