Guettarda lamprophylla Urb.
Taxonomy & Nomenclature
Conservation Status
Missing (Timyan, 2021)
Last record: 1928 (Timyan, 2021)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution & Habitat
Haiti, Hispaniola
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.
Timyan, J. (2021). Guettarda lamprophylla. The IUCN Red List of Threatened Species 2021: e.T121947344A121986400. https://dx.doi.org/10.2305/IUCN.UK.2021-1.RLTS.T121947344A121986400.en. Accessed on 10 July 2022.
Tachiadenus umbellatus Klack.
Taxonomy & Nomenclature
Conservation Status
Missing (Rabarimanarivo & Ravololomanana, 2017)
Last record: 1926 (Rabarimanarivo & Ravololomanana, 2017)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution & Habitat
Madagascar
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Klackenberg, J. (1990). Famille 168 - Gentianacées. Flore de Madagascar et des Comores, Muséum National d'Histoire Naturelle.
Other 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]
Rabarimanarivo, M. and Ravololomanana, N. (2017). Tachiadenus umbellatus. The IUCN Red List of Threatened Species 2017: e.T70102501A70139911. https://dx.doi.org/10.2305/IUCN.UK.2017-2.RLTS.T70102501A70139911.en. Accessed on 09 July 2022.
Chassalia coursii Bremek.
Taxonomy & Nomenclature
Conservation Status
Missing (Razafiniary, 2020)
Last record: 1945 (Razafiniary, 2020)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution & Habitat
Madagascar
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Bremekamp, C. E. B. (1962). Revision des Chasallia de Madagascar. Candollea 18: 195-238.
Other 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]
Razafiniary, V. (2020). Chassalia coursii. The IUCN Red List of Threatened Species 2020: e.T65611891A66167574. https://dx.doi.org/10.2305/IUCN.UK.2020-1.RLTS.T65611891A66167574.en. Accessed on 09 July 2022.
Ixora kalehensis De Block (2018)
Taxonomy & Nomenclature
Conservation Status
Missing (De Block et al., 2021)
Last record: 1960 (De Block et al., 2021)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution & Habitat
DR Congo
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
De Block, P. (2018). Ixora kalehensis, a new Rubiaceae species from the Democratic Republic of the Congo. Plant Ecology and Evolution 151(3): 442-448. doi:10.5091/plecevo.2018.1523.
Other references:
De Block, P., Simo-Droissart, M. and Tack, W. (2021). Ixora kalehensis. The IUCN Red List of Threatened Species 2021: e.T145607842A145607848. https://dx.doi.org/10.2305/IUCN.UK.2021-3.RLTS.T145607842A145607848.en. Accessed on 08 July 2022.
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.
Lasianthus subglobosus H.Zhu
Taxonomy & Nomenclature
Conservation Status
Missing (Tsen et al., 2021)
Last record: 1934 (Tsen et al., 2021)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution & Habitat
Sabah, Malaysia
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.
Tsen, S., Hor, C. S., Damit, A., Khoo, E., Matusin, D., Maycock, C. R., Mohd Yusof, Nur Adillah, Nilus, R., Sugau, J. and Pereira, J. T. (2021). Lasianthus subglobosus. The IUCN Red List of Threatened Species 2021: e.T162023088A162033688. https://dx.doi.org/10.2305/IUCN.UK.2021-3.RLTS.T162023088A162033688.en. Accessed on 08 July 2022.
Zhu, H., Roos, M. C. and Ridsdale, C. E. (2012). A Taxonomic Revision of the Malesian Species of Lasianthus (Rubiaceae). Blumea 57(1): 1-102.