Angraecum didieri

(Baill. ex Finet) Schltr.

Plante

ENLR Monde (IUCN)

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Filtrer le graphe par contexte spatialPays · région · aire protégée · écorégion · biome

Pas d'interactions documentées pour cette espèce.

Liste rouge IUCN

EN · En dangercritères B2ab(i,ii,iii,iv,v)↘Décroissante

Évaluation complète

Évaluation: 2025 · v3.1
Altitude: 500 – 1537 m
Profondeur: – m

État de la populationTexte officiel évaluation IUCNExpert

The population of Angraecum didieri is currently thought to be decreasing since 14 occurrences within the mine footprint have been extirpated and one at Torotorofotsy is likely to be extirpated in the near future. Estimating the number of mature individuals is challenging as the species is an epiphyte that grows on the lower branches of trees in humid forests.

Menaces identifiées(2 menaces classées CMP-IUCN)

5_3_3
Unintentional effects: (subsistence/small scale) [harvest]
Slow, Significant DeclinesMinority (<50%)Ongoing
3_2
Mining & quarrying
Very Rapid DeclinesMinority (<50%)Ongoing

Description complète des menacesTexte détaillé évaluation IUCNExpert

Angraecum didieri is threatened by forest clearing due to mining activities, forest degradation from selective logging, and timber harvesting for small-scale subsistence.

Habitats préférentiels (classification IUCN)

1_6Forest - Subtropical/Tropical Moist Lowland★

Mesures de conservation recommandéesStratégies de conservation IUCNExpert

Six collections were recorded from four protected areas, the Marojejy National Park (two occurrences), Mantadia National Park (one occurrence), Ankeniheny Zahamena Corridor (two occurrences), and the Torotorofotsy Protected Area. Individuals from this species have been brought to cultivation in the Ambatovy shade house in a mining site and Antananarivo shade house. Number of ex situ collections: 18 (BGCI 2022). This species is included in Appendix II of CITES.

Actions de conservation (8)Conservation Actions Classification Scheme — IUCNExpert

1_1Site/area protection
1_2Resource & habitat protection
2_1Site/area management
3_2Species recovery
3_4_1Captive breeding/artificial propagation
3_4_2Genome resource bank
4_1Formal education
4_3Awareness & communications

Stress écologiques (6)Stresses Classification — IUCNExpert

1_1Ecosystem conversion
1_2Ecosystem degradation
1_2Ecosystem degradation
2_1Species mortality
2_2Species disturbance
2_2Species disturbance

Priorités de recherche (6)Research Needed Classification — IUCNExpert

1_2Population size, distribution & trends
1_5Threats
1_6Actions
2_1Species Action/Recovery Plan
3_1Population trends
3_4Habitat trends

Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert

Royaumes biogéographiques

Afrotropical

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

EpiphyteForb or Herb

Références bibliographiques (9)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).
Madagascar Catalogue. 2022. Angraecum didieri (Baill. ex Finet) Schltr. St Louis, U.S.A. and Antananarivo, Madagascar. Missouri Botanical Gardens. Available at: <a href="http://legacy.tropicos.org/Name/23502764?projectid=17">http://legacy.tropicos.org/Name/23502764?projectid=17</a>. (Accessed: 2022).
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>.
BGCI Plant Search. 2022. Angraecum didieri. Available at: <a href="https://tools.bgci.org/plant_search.php?action=Find&lang=eng&ftrGenus=Angraecum&ftrSpecies=didieri&ftrEpithet=&ftrRedList=&ftrCWR=&ftrRedList1997=&x=0&y=0#results">https://tools.bgci.org/plant_search.php?action=Find&lang=eng&ftrGenus=Angraecum&ftrSpecies=didieri&ftrEpithet=&ftrRedList=&ftrCWR=&ftrRedList1997=&x=0&y=0#results</a>. (Accessed: 2022).
GeoCAT. 2021. Geospatial conservation assessment tool (GeoCAT). Available at: <a href="http://geocat.kew.org">http://geocat.kew.org</a>.
Cribb, P. and Hermans, J. 2009. Field Guide to the Orchids of Madagascar. Royal Botanic Gardens, Kew.
Hermans, J., Hermans, C., Du Puy, D., Cribb, P. and Bosser, J. 2007. Orchids of Madagascar. Royal Botanic Gardens, Kew.
GBIF.org. (7 April 2021). GBIF Occurrence Download . Available at: <a href="https://doi.org/10.15468/dl.be8gjz">https://doi.org/10.15468/dl.be8gjz</a>.
Muséum national d’Histoire naturelle, Paris (France). Available at: <a href="http://coldb.mnhn.fr/catalognumber/mnhn/p/p00098579">http://coldb.mnhn.fr/catalognumber/mnhn/p/p00098579</a>.

Évaluateurs & contributeurs (5)Personnes ayant contribué à l'évaluation IUCNExpert

assessor

Andriamahefarivo, L., Ramandimbisoa, B., Faranirina, L., Rabarimanarivo, M., Ravololomanana, N., Stévart, T. & Rajaovelona, L.R.

contributor

Verlynde, S.

evaluator

Andriambololonera, S., Razafindrakotosoa, F.M. & Razafinirina, L.

facilitators

Paradis, A.-H.

institutions

Missouri Botanical Garden & Royal Botanic Gardens, Kew

Andriamahefarivo, L., Ramandimbisoa, B., Faranirina, L., Rabarimanarivo, M., Ravololomanana, N., Stévart, T. & Rajaovelona, L.R. 2025. Angraecum didieri. The IUCN Red List of Threatened Species 2025: e.T64594043A64602185. Accessed on 05 May 2026.