Cuviera migeodii Verdc. (1991:771)
Taxonomy & Nomenclature
Conservation Status
Missing (IUCN SSC EAPRLA, 2025)
Last record: 1930 (IUCN SSC EAPRLA, 2025)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution & Habitat
Tendaguru, Tanzania
Anatomy & Morphology
Biology & Ecology
Hypodigm
Media
References
Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.
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.
IUCN SSC EAPRLA (IUCN SSC Eastern Africa Plant Red List Authority). (2025). Cuviera migeodii. The IUCN Red List of Threatened Species 2025: e.T35428A2859392. https://dx.doi.org/10.2305/IUCN.UK.2025-1.RLTS.T35428A2859392.en. Accessed on 11 August 2026.
POWO. (2026). Plants of the World Online (online resource). Facilitated by the Royal Botanic Gardens, Kew, United Kingdom. Available at: https://powo.science.kew.org/ [Accessed 11 August 2026]
Verstraete, B., Lachenaud, O., Smets, E., Dessein, S. and Sonké, B. (2013). Taxonomy and phylogenetics of Cuviera (Rubiaceae - Vanguerieae) and reinstatement of Globulostylis with the description of three new species. Botanical Journal of the Linnean Society 173: 407-411.
Sericanthe pseudosalacina (N.Hallé) O.Lachenaud & Sonké (2026)
Taxonomy & Nomenclature
Synonyms: Neorosea testui var. pseudosalacina N.Hallé in Fl. Gabon 17: 273 (1970); Sericanthe testui var. pseudosalacina (N.Hallé) Robbr. (1978:65)
Conservation Status
Rediscovered (Sonké et al., 2026)
Distribution & Habitat
Cameroon & Gabon
Anatomy & Morphology
Biology & Ecology
Hypodigm
Media
References
Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.
POWO. (2026). Plants of the World Online (online resource). Facilitated by the Royal Botanic Gardens, Kew, United Kingdom. Available at: https://powo.science.kew.org/ [Accessed 28 March 2026]
Sonké, B., Taedoumg, H. and Robbrecht, E. (2012). A reconsideration of the Lower Guinean species of Sericanthe (Rubiaceae, Coffeeae), with four new species from Cameroon and Gabon. Botanical Journal of the Linnean Society 169: 530-554.
Sosef, M. S. M. et al. (2006). Check-list des plantes vasculaires du Gabon. Scripta Botanica Belgica 35: 1-438.
Sonké, Bonaventure et al. (2026). Notes on Sericanthe (Rubiaceae) from Central Africa, including a new combination and a new species from Cameroon: Sericanthe owonoana sp. nov. Botanical Journal of the Linnean Society. https://doi.org/10.1093/botlinnean/boag013
Streptocaulon sylvestre Wight (1834:65)
Taxonomy & Nomenclature
Conservation Status
Rediscovered (Das, 1996; Kar et al., 2025)
Distribution & Habitat
Eastern Himalayas
Anatomy & Morphology
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Wight, R. (1834). Contributions to the Botany of India. London: Parbury, Allen & Co.
Other references:
Ahmed, Z. U. et al. (eds.). (2008). Encyclopedia of Flora and Fauna of Bangladesh 6: 1-408. Asiatic Society of Bangladesh.
Das, A. P. (1996). Rediscovery of Streptocaulon sylvestre Wight—An endangered and little known endemic plant of eastern India. Journal of the Bombay Natural History Society 93(2): 320-322.
Das, P., Ghosh, C. and Das, A. P. (2020). Present status and phytosociology of critically endangered Streptocaulon sylvestre Wight (Apocynaceae) in its only natural habitat in North Bengal University campus, India. Pleione 14(1): 57-70. doi:10.26679/Pleione.14.1.2020.057-070
Grierson, A. J. C. and Long, D. G. (2001). Flora of Bhutan 2: 1-1675. Royal Botanic Gardens, Edinburgh.
Hooker, J. P. (1883). Streptocaulon Wight & Arn. In: Hooker, J. D. (ed.). The Flora of British India, Vols. 4. L. Reeve & Co Ltd, Ashford, Kent. London. Pp. 9-10.
Jagtap, A. P. and Singh, N. P. (1999). Fascicles of Flora of India 24: 1-332. Botanical Survey of India, New Delhi.
Kar, Pallab et al. (2025). Phytochemical, pharmacological, and phylogenetic characterization of the critically endangered endemic plant Streptocaulon sylvestre Wight (Apocynaceae) from Eastern Himalaya. Pleione 19(3): 387-400. https://doi.org/10.26679/Pleione.19.3.2025.387-400
POWO. (2026). Plants of the World Online (online resource). Facilitated by the Royal Botanic Gardens, Kew, United Kingdom. Available at: https://powo.science.kew.org/ [Accessed 17 February 2026]
Prain, D. (1903). Bengal Plants. Vols. I & II. West, Newman & Co., London.
Mycetia hainanensis H.S.Lo (1991:112)
Taxonomy & Nomenclature
Conservation Status
Last record: 9 April 1988 (Xu et al., 2026:283)
Rediscovered on: 8 May 2025 (Xu et al., 2026:283)
Distribution & Habitat
Ledong County & Sanya City, Hainan Province, China
Anatomy & Morphology
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Lo, H. S. (1991). Materials for Chinese Rubiaceae (II). Guihania 11: 97-116.
Other references:
Xu, Dongxian, Li, Li, Zhang, Buyun and Song, Zhuqiu. (2026). Morphological and molecular evidence support the inclusion of Mycetia hainanensis in Mouretia (Rubiaceae). PhytoKeys 270: 273-288. https://doi.org/10.3897/phytokeys.270.180324https://doi.org/10.3897/phytokeys.270.180324
Rondeletia odorata breviflora Hook.f. (1878:6350)
Taxonomy & Nomenclature
Conservation Status
Extinct (WCMC, 1992:222) or Invalid (synonym of Rondeletia odorata odorata) (POWO, 2025)
Distribution & Habitat
Panama
Anatomy & Morphology
Biology & Ecology
Hypodigm
Media
References
Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.
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 28 August 2025]
WCMC (World Conservation Monitoring Centre). (1992). Global Biodiversity: Status of the Earth's living resources. London: Chapman & Hall. xx + 594 pp.