Garcinia klabang Miq. (1861:493)
Taxonomy & Nomenclature
Conservation Status
Last record: 1857 (Papingka et al., 2025)
Rediscovered in: 2025 (Papingka et al., 2025)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution & Habitat
Bangka Island, Sumatra, Indonesia
Biology & Ecology
Hypodigm
Media
References
Barker, A. (2020). Garcinia klabang. The IUCN Red List of Threatened Species 2020: e.T168657758A168908049. https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T168657758A168908049.en. Accessed on 10 July 2022.
Govaerts, R. (2003). World Checklist of Seed Plants Database in ACCESS Genera starting with letter G: 1-40325.
Papingka, Tirma et al. (2025). Rediscovery and conservation of Garcinia klabang (Clusiaceae), a critically endangered tree last collected in 1857 and previously tagged as possibly extinct. Journal for Nature Conservation 89: 127071. https://doi.org/10.1016/j.jnc.2025.127071
POWO. (2025). Plants of the World Online (online resource). Facilitated by the Royal Botanic Gardens, Kew, United Kingdom. Available at: https://powo.science.kew.org/ [Accessed 13 September 2025]
Croton poggei Pax
Taxonomy & Nomenclature
Conservation Status
Missing
Last record: 1882
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution
DR Congo
Biology & Ecology
Hypodigm
Media
References
Barberá, P., Simo-Droissart, M. & Tack, W. 2021. Croton poggei. The IUCN Red List of Threatened Species 2021: e.T137437501A138014646. https://dx.doi.org/10.2305/IUCN.UK.2021-3.RLTS.T137437501A138014646.en. Accessed on 10 July 2022.
Lebrun, J.P. and Stork, A.L. 2006. Euphorbiaceae–Dichapetalaceae. Vol. 2. Tropical African flowering plants: Ecology and distribution. Conservatoire et Jardin botaniques de la Ville de Genève, Geneva.
Léonard, J. 1962. Euphorbiaceae. In: W. Robyns, P. Staner, F. Demaret, R. Germain, G. Gilbert, L. Hauman, M. Homès, F. Jurion, J. Lebrun, M. Vanden Abeele, and R. Boutique (eds), Flore du Congo et du Rwanda-Burundi, pp. 1-214. INÉAC, Bruxelles.
Inversodicraea achoundongii J.J.Schenk, Herschlag & D.W.Thomas
Taxonomy & Nomenclature
Conservation Status
Missing
Last record: 1992
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution
Cameroon
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Schenk, J.J., Herschlag, R., Thomas, D.W. 2015. Describing a new species into a polyphyletic genus: taxonomic novelty in Ledermanniella sl (Podostemaceae) from Cameroon. Systematic Botany 40(2): 539-552.
Other references:
Cheek, M., Feika, A., Lebbie, A., Goyder, D., Tchiengue, B., Sene, O., Tchouto, P. and van der Burgt, X. 2017. A synoptic revision of Inversodicraea (Podostemaceae). Blumea 62: 125-156. DOI: 10.3767/blumea.2017.62.02.07.
Lovell, R. & Cheek, M. 2021. Inversodicraea achoundongii. The IUCN Red List of Threatened Species 2021: e.T120469803A120469806. https://dx.doi.org/10.2305/IUCN.UK.2021-2.RLTS.T120469803A120469806.en. Accessed on 09 July 2022.
Euphorbia ramofraga Denis & Humbert ex Leandri
Taxonomy & Nomenclature
Conservation Status
Missing
Last record: 1924
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution
Madagascar
Biology & Ecology
Hypodigm
Media
References
Cremers, G. 1984. Les euphorbes coralliformes de Madagascar. Bulletin du Jardin Botanique National de Belgique 54(1-2): 23-64.
Denis, M. 1921. Les Euphorbiées des Iles Australes d'Afrique. Theses. Nemours.
Faranirina, L. & Haevermans, T. 2019. Euphorbia ramofraga. The IUCN Red List of Threatened Species 2019: e.T44432A124143153. https://dx.doi.org/10.2305/IUCN.UK.2019-2.RLTS.T44432A124143153.en. Accessed on 09 July 2022.
Stonesia gracilis G.Taylor (1953:65)
Taxonomy & Nomenclature
Conservation Status
Missing (Cheek & Ouedraogo, 2018; Couch et al., 2019:13)
Last record: 1951 (Cheek & Ouedraogo, 2018; Couch et al., 2019:13)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution
Kindia Falls, Guinea
Reports of the species from Cameroon and Sierra Leone are erroneous (Cheek & Ouedraogo, 2018).
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Taylor, G. (1953). Notes on Podostemaceae for the revision of Flora West Tropical Africa. Bulletin of the British Museum 1(3): 51-79.
Other references:
Cheek, M. and Ouedraogo, L. (2018). Stonesia gracilis. The IUCN Red List of Threatened Species 2018: e.T185612A124044579. https://dx.doi.org/10.2305/IUCN.UK.2018-1.RLTS.T185612A124044579.en. Accessed on 09 July 2022.
Cook, C. D. K. (1996). Aquatic Plant Book. SPB Academic Publishing, Amsterdam/New York.
Couch, Charlotte, Cheek, Martin, Haba, Pépé M., Molmou, Denise, Williams, Jenny, Magassouba, Sékou, Doumbouya, Saïdou and Diallo, Muhammad Yaya. (2019). Threatened habitats and Important Plant Areas (TIPAs) of Guinea, west Africa. Royal Botanic Gardens, Kew.
Gosline, G., Bidault, E., van der Burgt, X., Cahen, D., Challen, G., Condé, N., Couch, C., Couvreur, T.L.P., Dagallier, L.M.J., Darbyshire, I., Dawson, S., Doré, T.S., Goyder, D., Grall, A., Haba, P., Haba, P., Harris, D., Hind, D.J.N., Jongkind et al. (2023). A Taxonomically-verified and Vouchered Checklist of the Vascular Plants of the Republic of Guinea. Nature, scientific data 10, Article number: 327: [1]-[12].
Hutchinson, J. and Dalziel, J. M. (1966-1972). Flora of West Tropical Africa. Crown Agents For Over Sea Goverments And Administrations, London.
Hutchinson, J., Dalziel, J. M. and Keay, R. W. J. (1954-1958). Flora of West Tropical Africa, ed. 2, 1: 1-828.
Ouedraogo, L. (2010). Stonesia gracilis. The IUCN Red List of Threatened Species 2010: e.T185612A8446655. https://dx.doi.org/10.2305/IUCN.UK.2010-3.RLTS.T185612A8446655.en. Accessed on 06 April 2024.