Strychnos ridleyi King & Gamble (1908:621)

Taxonomy & Nomenclature

Conservation Status

Extinct (Humphreys et al., 2019; Albani Rocchetti et al., 2022; Christenhusz & Govaerts, 2024; POWO, 2024)

Last record: 1894 (Christenhusz & Govaerts, 2024)

Distribution

Singapore

Biology & Ecology

Hypodigm

Media

References

Albani Rocchetti, Giulia, Carta, Angelino, Mondoni, Andrea, Godefroid, Sandrine, Davis, Charles C., Caneva, Giulia, Albrecht, Matthew A., Alvarado, Karla, Bijmoer, Roxali, Borosova, Renata, Bräuchler, Christian, Breman, Elinor, Briggs, Marie, Buord, Stephane, Cave, Lynette H., Da Silva, Nílber Gonçalves, Davey, Alexandra H., Davies, Rachael M., Dickie, John B., Fabillo, Melodina, Fleischmann, Andreas, Franks, Andrew, Hall, Geoffrey, Kantvilas, Gintaras, Klak, Cornelia, Liu, Udayangani, Medina, Leopoldo, Reinhammar, Lars Gunnar, Sebola, Ramagwai J., Schönberger, Ines, Sweeney, Patrick, Voglmayr, Hermann, White, Adam, Wieringa, Jan J., Zippel, Elke Zippel and Abeli, Thomas. (2022). Selecting the best candidates for resurrecting extinct-in-the-wild plants from herbaria. Nature Plants 8: 1385-1393. https://doi.org/10.1038/s41477-022-01296-7 [Supplementary Tables S1-S6]

Christenhusz, Maarten J. M. and Govaerts, Rafaël. (2023). Uitgestorven. Op plantenjacht rond de wereld: 1-511. Sterck & De Vreese.

Christenhusz, Maarten J. M. and Govaerts, Rafaël. (2024). Plant extinction in the Anthropocene. Botanical Journal of the Linnean Society. https://doi.org/10.1093/botlinnean/boae045 [Appendix S1]

Humphreys, Aelys M., Govaerts, Rafaël, Ficinski, Sarah Z., Lughadha, Eimear Nic and Vorontsova, Maria S. (2019). Global dataset shows geography and life form predict modern plant extinction and rediscovery. Nature Ecology & Evolution 3: 1043-1047. https://doi.org/10.1038/s41559-019-0906-2 [Supplementary Dataset 1]

Middleton, J. D. (ed.). (2019). Flora of Singapore 13: 1-654. Singapore Botanic Gardens.

POWO. (2024). 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 November 2024]

Turner, I. M. (1995). A catalogue of the Vascular Plants of Malaya. Gardens' Bulletin Singapore 47(1): 1-346.

Van Steenis, C. G. G. J. (ed.). (1960-1972). Flora Malesiana 6: 1-1023. Noordhoff-Kolff N.V., Djakarta.

WCSP. (2003). World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/

https://vanishingflora.proboards.com/thread/3184/strychnos-ridleyi

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Stenostomum tomentosum (Sw.) DC.

Taxonomy & Nomenclature

Synonym/s: Antirhea tomentosa (Sw.) Benth. & Hook.f. ex Fawc.

Conservation Status

Last record: 1784-86

Rediscovered in 1975

IUCN RedList status: Critically Endangered

This species was only known from the holotype collected at Trelawny Parish in 1784-86. However, it was rediscovered in 1975, which unfortunately is also the most recent record of the species, as it is feared extinct.

Distribution

Jamaica

Biology & Ecology

Hypodigm

Media

References

Holmes, Branden. (2021). What's Lost and What Remains: The Sixth Extinction in 100 Accounts (eBook). Self published.

Kelly, Daniel L. (1988). The threatened flowering plants of Jamaica. Biological Conservation 46(3): 201-216.

Oldfield, Sara, Lusty, Charlotte and MacKinven, Amy (compilers). (1998). The World List of Threatened Trees. Cambridge, U.K.: World Conservation Press. 650 pp.

The Nature Conservancy. 1996. Natural Heritage Central Database. (Status and distribution data on Latin American plants, developed in collaboration with Latin American Conservation Data Centers and Missouri Botanical Garden).

Proctor, G. R. (1982). More additions to the flora of Jamaica. J. Arnold Arb., 63: 199-315.

World Conservation Monitoring Centre. 1998. Stenostomum tomentosum. The IUCN Red List of Threatened Species 1998: e.T33876A9810069. http://dx.doi.org/10.2305/IUCN.UK.1998.RLTS.T33876A9810069.en. Downloaded on 16 November 2016.

http://www.virtualherbarium.org/jamaica2006/overview.html

http://vanishingflora.proboards.com/thread/1088/antirhea-tomentosa

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Spermacoce tenuior L.

Taxonomy & Nomenclature

Conservation Status

Missing

Distribution

Mauritius, Mascarene Islands

Biology & Ecology

Hypodigm

Media

References

http://vanishingflora.proboards.com/thread/1948/spermacoce-tenuior

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Riocreuxia woodii N.E.Br. (1908:803)

Taxonomy & Nomenclature

Synonyms: Riocreuxia flanaganii subsp. woodii (N.E.Br.) R.A.Dyer in Bothalia 12: 632 (1979); Ceropegia flanaganii var. fallax H.Huber in Mem. Soc. Brot. 12: 169 (1958)

Conservation Status

Missing (Raimondo et al., 2009; Styles et al., 2012) or Extinct (Hilton-Taylor, 1996; Scott-Shaw, 1999; Humphreys et al., 2019; Albani Rocchetti et al., 2022; Christenhusz & Govaerts, 2024; POWO, 2024)

Last record (disputed): 1879 (Christenhusz & Govaerts, 2024); 1884 (Styles et al., 2012)

Distribution

Inanda, KwaZulu-Natal, South Africa

Biology & Ecology

Hypodigm

Media

References

Albani Rocchetti, Giulia, Carta, Angelino, Mondoni, Andrea, Godefroid, Sandrine, Davis, Charles C., Caneva, Giulia, Albrecht, Matthew A., Alvarado, Karla, Bijmoer, Roxali, Borosova, Renata, Bräuchler, Christian, Breman, Elinor, Briggs, Marie, Buord, Stephane, Cave, Lynette H., Da Silva, Nílber Gonçalves, Davey, Alexandra H., Davies, Rachael M., Dickie, John B., Fabillo, Melodina, Fleischmann, Andreas, Franks, Andrew, Hall, Geoffrey, Kantvilas, Gintaras, Klak, Cornelia, Liu, Udayangani, Medina, Leopoldo, Reinhammar, Lars Gunnar, Sebola, Ramagwai J., Schönberger, Ines, Sweeney, Patrick, Voglmayr, Hermann, White, Adam, Wieringa, Jan J., Zippel, Elke Zippel and Abeli, Thomas. (2022). Selecting the best candidates for resurrecting extinct-in-the-wild plants from herbaria. Nature Plants 8: 1385-1393. https://doi.org/10.1038/s41477-022-01296-7 [Supplementary Tables S1-S6]

Baxter, J. and Crouch, N. (1994). Riocreuxia woodii: an extinct (?) member of the milkweed family from Kwazulu-Natal. PlantLife 10:18-21.

Brown, N. E. (1909). Asclepiadeae. In: W.T. Thiselton-Dyer (ed). Flora Capensis IV Section I (Vacciniaceae to Gentianeae): 518-1036. Lovell Reeve & Co., Ltd., London.

Christenhusz, Maarten J. M. and Govaerts, Rafaël. (2023). Uitgestorven. Op plantenjacht rond de wereld: 1-511. Sterck & De Vreese.

Christenhusz, Maarten J. M. and Govaerts, Rafaël. (2024). Plant extinction in the Anthropocene. Botanical Journal of the Linnean Society. https://doi.org/10.1093/botlinnean/boae045 [Appendix S1]

Crouch, N. and Symmonds, R. (2000). Localising the "Inanda" provenance of John Medley Wood. SABONET News 5(2): 97-99.

Dyer, R. A. (1980). Brachystelma, Ceropegia and Riocreuxia. In: O.A. Leistner (ed). Flora of Southern Africa 27 Part 4:1-88. Botanical Research Institute, Pretoria.

Dyer, R. A. (1983). Ceropegia, Brachystelma and Riocreuxia in southern Africa. A.A. Balkema, Rotterdam, Netherlands.

Germishuizen, G. and Meyer, N. L. (eds.). (2003). Plants of Southern Africa an annotated checklist. Strelitzia 14: 1-1231. National Botanical Institute, Pretoria.

Hilton-Taylor, Craig (ed.). (1996). Red data list of southern African plants. Strelitzia 4. Pretoria: South African National Botanical Institute.

Humphreys, Aelys M., Govaerts, Rafaël, Ficinski, Sarah Z., Lughadha, Eimear Nic and Vorontsova, Maria S. (2019). Global dataset shows geography and life form predict modern plant extinction and rediscovery. Nature Ecology & Evolution 3: 1043-1047. https://doi.org/10.1038/s41559-019-0906-2 [Supplementary Dataset 1]

Le Roux, Johannes J., Hui, C., Castillo, M. L., Iriondo, J. M., Keet, J.-H., Khapugin, A. A., Médail, F., Rejmánek, M., Theron, G. Yannelli, F. A. and Hirsch, H. (2019). Recent Anthropogenic Plant Extinctions Differ in Biodiversity Hotspots and Coldspots. Current Biology 29(17): 2912-2918.e2. https://doi.org/10.1016/j.cub.2019.07.063

POWO. (2024). Plants of the World Online (online resource). Facilitated by the Royal Botanic Gardens, Kew, United Kingdom. Available at: https://powo.science.kew.org/ [Accessed 25 May 2024]

Raimondo, D., von Staden, L., Foden, W., Victor, J. E., Helme, N. A., Turner, R. C., Kamundi, D. A. and Manyama, P. A. (2009). Red List of South African Plants. Strelitzia 25. South African National Biodiversity Institute, Pretoria.

Scott-Shaw, C. R. (1999). Rare and threatened plants of KwaZulu-Natal and neighbouring regions. KwaZulu-Natal Nature Conservation Service, Pietermaritzburg.

Styles, D. (2004). John Medley Wood's Inanda - What does it look like today? Part I: The Inanda Valley. PlantLife 30:28-35.

Styles, D., Scott-Shaw, C. R., Raimondo, D. and von Staden, L. (2012). Riocreuxia woodii N.E.Br. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/06/08.

Walter, Kerry S. and Gillett, Harriet J. (eds.). (1998). 1997 IUCN Red List of Threatened Plants. Compiled by the World Conservation Monitoring Centre. Gland, Switzerland & Cambridge, UK: IUCN – The World Conservation Union. lxiv + 862 pp.

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