Aerangis ellisii
(B.S.Williams) Schltr.
Pays · région · aire protégée · écorégion · biome
Pas d'interactions documentées pour cette espèce.
Liste rouge IUCN
VU · Vulnérablecritères A4c↘Décroissante- Évaluation
- 2025 · v3.1
- Altitude
- 22 – 1700 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
The population of Aerangis ellisii is currently thought to be decreasing since its habitat is threatened by forest clearing due to mining activities, and forest degradation by illegal logging, timber harvesting for small-scale subsistence, wildfires, slash-and-burn agricultural practices (tavy), and illegal collecting. The number of mature individuals is not known and cannot be estimated since the species is an epiphyte on the trunks and branches, on rocky basalt, quartz, granite outcrops, and gneiss, in humid and subhumid forests, and mossy shrublands.
Menaces identifiées(6 menaces classées CMP-IUCN)
2_1_1Shifting agricultureRapid DeclinesMajority (50-90%)Ongoing2_1_2Small-holder farmingRapid DeclinesMinority (<50%)Ongoing5_2_1Intentional use (species is the target)Rapid DeclinesMajority (50-90%)Ongoing5_3_4Unintentional effects: (large scale) [harvest]Slow, Significant DeclinesMinority (<50%)Ongoing7_1_1Increase in fire frequency/intensitySlow, Significant DeclinesMinority (<50%)Ongoing3_2Mining & quarryingVery Rapid DeclinesMinority (<50%)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
Aerangis ellisii is threatened by forest clearing due to mining activities and shifting agriculture, and forest degradation due to small-scale agriculture, along with wood harvesting for subsistence and wildfires. The species is also threatened by illegal collecting and trade.
Habitats préférentiels (classification IUCN)
1_6Forest - Subtropical/Tropical Moist Lowland★6Rocky areas (eg. inland cliffs, mountain peaks)★
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
Aearangis ellisii, an epiphytic orchid endemic to Madagascar, is known from ten protected areas: Analamazaotra National Park, Andringitra National Park, Befotaka-Midongy du Sud National Park, Corridor Ankeniheny-Zahamena Natural Resources Reserve, Corridor Marojejy-Anjanaharibe Sud-Tsaratanana-partie Nord Natural Resources Reserve, Ibity Massif Harmonious Protected Landscape, Manongarivo Special Reserve, Ranomafana National Park, Tsaratanana Strict Nature Reserve, and Tsitongamabarika Natural Resources Reserve. Seeds are banked in Ambatovy and Antananarivo seed banks. The species is currently listed in Appendix I of CITES and ex situ conservation is recommended (micro-propagation and living collections).
Actions de conservation (2)Conservation Actions Classification Scheme — IUCNExpert
1_2Resource & habitat protection3_4_1Captive breeding/artificial propagation
Stress écologiques (18)Stresses Classification — IUCNExpert
1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance
Usage & commerce (1)Use & Trade — IUCNExpert
13Pets/display animals, horticulturenationalsubsistance
Priorités de recherche (4)Research Needed Classification — IUCNExpert
1_3Life history & ecology1_4Harvest, use & livelihoods1_5Threats1_6Actions
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Afrotropical
Systèmes (terrestre/eau douce/marin)
Terrestrial
Formes de croissance
EpiphyteLithophyte
Références bibliographiques (7)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2025. The IUCN Red List of Threatened Species. Version 2025-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 27 March 2025).
- IUCN Standards and Petitions Committee. 2022. Guidelines for Using the IUCN Red List Categories and Criteria. Version 15. Prepared by the Standards and Petitions Committee. Available at: <a href="https://nc.iucnredlist.org/redlist/content/attachment_files/RedListGuidelines.pdf">https://nc.iucnredlist.org/redlist/content/attachment_files/RedListGuidelines.pdf</a>.
- Madagascar Catalogue. 2022. <i>Aerangis ellisii</i> (B.S. Williams) Schltr. St. Louis, U.S.A. and Antananarivo, Madagascar. Missouri Botanical Garden. Available at: <a href="http://legacy.tropicos.org/Name/23502505?projectid=17">http://legacy.tropicos.org/Name/23502505?projectid=17</a>. (Accessed: 2022).
- GeoCAT. 2018. Geospatial conservation assessment tool (GeoCAT). Available at: <a href="http://geocat.kew.org">http://geocat.kew.org</a>. (Accessed: 2018/08/03).
- Bosser, J. and Lecoufle, M. 2011. <i>Les orchidées de Madagascar [Orchids of Madagascar]</i>. Collection Parthénope. Biotope, Mèze.
- Cribb, P. and Hermans, J. 2009. <i>Field Guide to the Orchids of Madagascar</i>. Royal Botanic Gardens, Kew.
- Du Puy, D., Hermans, J and Hermans, C. 1999. <i>The Orchids of Madagascar</i>. Royal Botanic Gardens, Kew.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Ravololomanana, N., Ramandimbisoa, B., Stévart, T., Andriambololonera, S., Andriamahefarivo, L., Faranirina, L., Rabarimanarivo, M., Rajaovelona, L.R. & Droissart, V.
evaluator
Rabakonandrianina, E., Rakotonasolo, A.R. & Verlynde, S.
institutions
Missouri Botanical Garden & Royal Botanic Gardens, Kew
Ravololomanana, N., Ramandimbisoa, B., Stévart, T., Andriambololonera, S., Andriamahefarivo, L., Faranirina, L., Rabarimanarivo, M., Rajaovelona, L.R. & Droissart, V. 2025. Aerangis ellisii. The IUCN Red List of Threatened Species 2025: e.T70102577A70142612. 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
Note nomenclaturale & synonymesDétails taxonomiques + synonymes CoLExpert
Note nomenclaturale
TAXREF v18 — INPN/MNHNSynonymes (10)— redirigent vers cette page
- Aerangis buysoniiGod.-Leb.
- Aerangis caulescensSchltr.
- Aerangis ellisii var. grandifloraJ.Stewart
- Aerangis ellisii var. grandiflora(B.S.Williams) Schltr.
- Aerangis platyphyllaSchltr.
- Angorchis ellisii(B.S.Williams) Kuntze
- Angorkis ellisii(B.S.Williams) Kuntze
- Angraecum buyssoniiGod.-Leb.
- Angraecum dubuyssoniiGod.-Leb.
- Angraecum ellisiiB.S.Williams
Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).