Inversodicraea senei Cheek
Taxonomy & Nomenclature
Conservation Status
Missing
Last record: 2016
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution
Memve’ele Falls, Ntem River, Cameroon
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Cheek, M., Séné, O. and Ngansop, E. (2020). Three new Critically Endangered Inversodicraea (Podostemaceae) species from Tropical Africa: I. senei, I. tanzaniensis and I. botswana. Kew Bulletin 75: 31. https://doi.org/10.1007/s12225-020-09889-1
Other references:
Budden, A. and Cheek, M. (2022). Inversodicraea senei. The IUCN Red List of Threatened Species 2022: e.T183863983A184577316. https://dx.doi.org/10.2305/IUCN.UK.2022-1.RLTS.T183863983A184577316.en. Accessed on 24 July 2022.
Ochna braunii Sleumer
Taxonomy & Nomenclature
Conservation Status
Missing
Last record: 2001
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution
Tanzania
Biology & Ecology
Hypodigm
Media
References
Gereau, R.E., Kabuye, C., Kalema, J., Kamau, P., Kindeketa, W., Luke, W.R.Q., Lyaruu, H.V.M., Malombe, I., Mboya, E.I., Mollel, N., Njau, E.-F., Schatz, G.E., Sitoni, D., Ssegawa, P. & Wabuyele, E. 2020. Ochna braunii. The IUCN Red List of Threatened Species 2020: e.T158222A767182. https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T158222A767182.en. Accessed on 22 July 2022.
Ochna polyarthra Verdc.
Taxonomy & Nomenclature
Conservation Status
Missing
Last record: 1965
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution
Tanzania
Biology & Ecology
Hypodigm
Media
References
Gereau, R.E., Kabuye, C., Kalema, J., Kamau, P., Kindeketa, W., Luke, W.R.Q., Lyaruu, H.V.M., Malombe, I., Mboya, E.I., Mollel, N., Njau, E.-F., Schatz, G.E., Sitoni, D., Ssegawa, P. & Wabuyele, E. 2020. Ochna polyarthra. The IUCN Red List of Threatened Species 2020: e.T158053A758841. https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T158053A758841.en. Accessed on 22 July 2022.
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.