Ontologia

Aerangis ellisii

(B.S.Williams) Schltr.

VULR Monde (IUCN)
Pays · région · aire protégée · écorégion · biome

Pas d'interactions documentées pour cette espèce.

Liste rouge IUCN

VU · Vulnérablecritères A4cDécroissante
Évaluation complète
Évaluation
2025 · v3.1
Altitude
221700 m
Profondeur
m
État de la populationExpert
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_1
    Shifting agriculture
    Rapid DeclinesMajority (50-90%)Ongoing
  • 2_1_2
    Small-holder farming
    Rapid DeclinesMinority (<50%)Ongoing
  • 5_2_1
    Intentional use (species is the target)
    Rapid DeclinesMajority (50-90%)Ongoing
  • 5_3_4
    Unintentional effects: (large scale) [harvest]
    Slow, Significant DeclinesMinority (<50%)Ongoing
  • 7_1_1
    Increase in fire frequency/intensity
    Slow, Significant DeclinesMinority (<50%)Ongoing
  • 3_2
    Mining & quarrying
    Very Rapid DeclinesMinority (<50%)Ongoing
Description complète des menacesExpert
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 recommandéesExpert
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)Expert
  • 1_2Resource & habitat protection
  • 3_4_1Captive breeding/artificial propagation
Stress écologiques (18)Expert
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
  • 2_1Species mortality
  • 2_1Species mortality
  • 2_1Species mortality
  • 2_1Species mortality
  • 2_1Species mortality
  • 2_1Species mortality
  • 2_2Species disturbance
  • 2_2Species disturbance
  • 2_2Species disturbance
  • 2_2Species disturbance
  • 2_2Species disturbance
  • 2_2Species disturbance
Usage & commerce (1)Expert
  • 13Pets/display animals, horticulture
    nationalsubsistance
Priorités de recherche (4)Expert
  • 1_3Life history & ecology
  • 1_4Harvest, use & livelihoods
  • 1_5Threats
  • 1_6Actions
Niche IUCN globaleExpert

Royaumes biogéographiques

Afrotropical

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

EpiphyteLithophyte
Références bibliographiques (7)Expert
  1. 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).
  2. 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>.
  3. 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).
  4. GeoCAT. 2018. Geospatial conservation assessment tool (GeoCAT). Available at: <a href="http://geocat.kew.org">http://geocat.kew.org</a>. (Accessed: 2018/08/03).
  5. Bosser, J. and Lecoufle, M. 2011. <i>Les orchidées de Madagascar [Orchids of Madagascar]</i>. Collection Parthénope. Biotope, Mèze.
  6. Cribb, P. and Hermans, J. 2009. <i>Field Guide to the Orchids of Madagascar</i>. Royal Botanic Gardens, Kew.
  7. Du Puy, D., Hermans, J and Hermans, C. 1999. <i>The Orchids of Madagascar</i>. Royal Botanic Gardens, Kew.
Évaluateurs & contributeurs (3)Expert
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

Observations & statuts

Bibliographie

Note nomenclaturale & synonymesExpert

Note nomenclaturale

TAXREF v18 — INPN/MNHN

Synonymes (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).