Hunteria hexaloba (Pichon) Omino

Taxonomy & Nomenclature

Synonym/s: Tetradoa hexaloba Pichon (basionym)

Conservation Status

Missing

Last record: 1902

IUCN RedList status: Critically Endangered (Possibly Extinct)

Distribution

Gabon

Biology & Ecology

Hypodigm

Media

References

Cheek, Martin, Tchiengué, B. and van der Burgt, X. (2021). Taxonomic revision of the threatened African genus Pseudohydrosme Engl. (Araceae), with P. ebo, a new, critically endangered species from Ebo, Cameroon. PeerJ 9: e10689. https://doi.org/10.7717/peerj.10689

Lachenaud, O., Stévart, T., Ikabanga, D., Ngagnia Ndjabouda, E. and Walters, G. (2013). Les forêts littorales de la région de Libreville (Gabon) et leur importance pour la conservation: description d’un nouveau Psychotria (Rubiaceae) endémique. Plant Ecology and Evolution 146(1): 68-74.

Omino, E. (1996). A contribution to the leaf anatomy and taxonomy of Apocynaceae in Africa: the leaf anatomy of Apocynaceae in East Africa; a monograph of Pleiocarpinae (series of revisions of Apocynaceae 41) Wageningen Agricultural University Papers 96(1): 1-178.

Stévart, T. & Walters, G. 2016. Hunteria hexaloba. The IUCN Red List of Threatened Species 2016: e.T203776A2771321. https://dx.doi.org/10.2305/IUCN.UK.2016-1.RLTS.T203776A2771321.en. Accessed on 01 August 2022.

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Guettarda psiloclada Urb.

Taxonomy & Nomenclature

Conservation Status

Missing

Last record: 1924

IUCN RedList status: Critically Endangered (Possibly Extinct)

Distribution

Haiti, Hispaniola

Biology & Ecology

Hypodigm

Media

References

Timyan, J. 2021. Guettarda psiloclada. The IUCN Red List of Threatened Species 2021: e.T121947387A121986425. https://dx.doi.org/10.2305/IUCN.UK.2021-1.RLTS.T121947387A121986425.en. Accessed on 31 July 2022.

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Gonzalagunia microsepala Urb. & Ekman

Taxonomy & Nomenclature

Conservation Status

Missing

Last record: 1927

IUCN RedList status: Critically Endangered (Possibly Extinct)

Distribution

Haiti, Hispaniola

Biology & Ecology

Hypodigm

Media

References

Timyan, J. 2021. Gonzalagunia microsepala. The IUCN Red List of Threatened Species 2021: e.T121947219A121986355. https://dx.doi.org/10.2305/IUCN.UK.2021-1.RLTS.T121947219A121986355.en. Accessed on 31 July 2022.

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Breonia membranacea Havil.

Taxonomy & Nomenclature

Conservation Status

Missing (Rakotonasolo & Razafimandimbison, 2019)

Last record: 1957 (Rakotonasolo & Razafimandimbison, 2019)

IUCN RedList status: Critically Endangered (Possibly Extinct)

Distribution & Habitat

Madagascar

Biology & Ecology

Hypodigm

Media

References

Fräßdorf, Doreen. (n.d.). Liste ausgestorbener Pflanzen der Neuzeit / List of extinct plants in modern times. Available at: https://www.artensterben.de/liste-ausgestorbener-pflanzen/ [Accessed 27 September 2026]

Graner, Torun. (2026). A World Without Trees: An Analysis of Global Tree Extinction Rates, Geographical Distribution and Correlation to Socioeconomic Factors. Master’s Dissertation, School of Natural Sciences, Technology and Environmental Studies, Södertörn University. 41 pp.

Rakotonasolo, F. and Razafimandimbison, S. G. (2019). Breonia membranacea. The IUCN Red List of Threatened Species 2019: e.T70102324A70123149. https://dx.doi.org/10.2305/IUCN.UK.2019-3.RLTS.T70102324A70123149.en. Accessed on 31 July 2022.

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