Euphorbia cyri V. W. Steinmann, 2003:48
Taxonomy & Nomenclature
Synonym/s: Pedilanthus tomentellus B.L. Rob. & Greenm., 1895: 164
Conservation Status
Rediscovered
Distribution
Mexico
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Steinmann, Victor W. (2003). The submersion of Pedilanthus into Euphorbia (Euphorbiaceae). Acta Botanica Mexicana 65: 45-50.
Other references:
Lomelí Sención, J.A. (2006). Revisión de Euphorbia subgénero Pedilanthus (Euphorbiaceae). Universidad de Guadalajara. México: Tesis.
Olson, Mark E., Lomelí S, José A. and Cacho, N. Ivalú. (2005). Extinction threat in the Pedilanthus clade (Euphorbia, Euphorbiaceae), with special reference to the recently rediscovered E. conzattii (P. pulchellus). American Journal of Botany 92(4): 634-641.
B.L. Rob. & Greenm. (1895). Amer. J. Sci. 50: 164.
Euphorbia cereiformis L.
Taxonomy & Nomenclature
Conservation Status
Missing
Last record: 1600's?
Distribution
South Africa?
Biology & Ecology
Hypodigm
Media
References
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.
von Staden, L. (2015). Euphorbia cereiformis L. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/05/30.
White, A., Dyer, R.A. and Sloane, B.L. 1941. The succulent Euphorbieae (Southern Africa) Volume II. Abbey Garden Press, Pasadena.
Xylosma sp. nov. 'Rapa Nui'
Taxonomy & Nomenclature
Conservation Status
Extinct (Orliac & Orliac, 2008:202)
Last record: <600 yrcalBP (Prebble & Dowe, 2008:2547)
Distribution
Rapa Nui (=Easter Island)
Biology & Ecology
Hypodigm
Media
References
Orliac, Catherine and Orliac, Michel. (1998). The disappearance of Easter Island’s forest: over-exploitation or climatic catastrophe?, pp. 129-134. In: Stevenson, C. M., Lee, G. and Morin, F. J. (eds.). Easter Island in Pacific Context, South Seas Symposium. Proceedings of theFourth International Conference on Easter Island and East Polynesia. EasterIsland Foundation, Los Osos.
Orliac, Catherine and Orliac, Michel. (2008). Extinct flora of Easter Island, pp. 197-208. In: Di Piazza, Anne, Pearthree, Erick and Sand, Christophe (eds.). At the Heart of Ancient Societies: French Contributions to Pacific Archaeology. Les Cahiers de l'Archéologie en Nouvelle-Calédonie.
Prebble, Matthew and Dowe, John L. (2008). The late Quaternary decline and extinction of palms on Pacific islands. Quaternary Science Reviews 27(27-28): 2546-2567. https://doi.org/10.1016/j.quascirev.2008.09.015
https://vanishingflora.proboards.com/thread/1291/subfossil-plants-pacific-islands
Xylosma serrata (Sw.) Urb. (1899:371)
Taxonomy & Nomenclature
Synonyms: Lightfootia serrata Sw. in Prodr. Veg. Ind. Occ.: 83 (1788); Prockia serrata (Sw.) Willd. in Sp. Pl., ed. 4. 2: 1213 (1799); Thiodia serrata (Sw.) Endl. in W.G.Walpers, Repert. Bot. Syst. 1: 204 (1843); Myroxylon serratum (Sw.) Krug & Urb. in Bot. Jahrb. Syst. 15: 295 (1892)
Conservation Status
Missing (Bárrios, 2015) or Extinct (Christenhusz & Govaerts, 2024; POWO, 2024)
Last record (disputed): 1980 (Bárrios, 2015); 1997 (Christenhusz & Govaerts, 2024)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution
Great Alps Falls, Montserrat, Lesser Antilles
Biology & Ecology
Hypodigm
Media
References
Acevedo-Rodríguez, Pedro and Strong, Mark T. (2012). Catalogue of Seed Plants of the West Indies. Smithsonian Contributions to Botany 98: xxv + 1192 pages, 3 maps, 4 tables.
Bárrios, S. (2015). Xylosma serrata. The IUCN Red List of Threatened Species 2015: e.T16757142A16757248. https://dx.doi.org/10.2305/IUCN.UK.2015-2.RLTS.T16757142A16757248.en. Downloaded on 27 December 2015.
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]
Howard, R. A. (ed.). (1974). Flora of the Lesser Antilles; Leeward and Windward Islands, vol. 1. Arnold Arboretum of Harvard University, Jamaica Plain, Massachusetts.
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]
Sleumer, H. O. (1980). Flacourtiaceae. Fl. Neotrop. Monogr. 22: 1-500.
Vojtek, Ján. (2020). Refining extinction estimations for plants of the UK Overseas Territories (UKOTs). MSc dissertation, Queen Mary, University of London. https://doi.org/10.34885/185
Xylosma ruizianum Sleumer
Taxonomy & Nomenclature
Conservation Status
Missing
Last record: 1930's
IUCN RedList status: Data Deficient
Distribution
Peru
Biology & Ecology
Hypodigm
Media
References
Missouri Botanical Garden. 1997. Peru Checklist: Catalogue of the Flowering Plants and Gymnosperms of Peru. Missouri Botanical Garden.
Oldfield, Sara, Lusty, Charlotte and MacKinven, Amy (compilers). (1998). The World List of Threatened Trees. Cambridge, U.K.: World Conservation Press. 650 pp.
World Conservation Monitoring Centre. 1998. Xylosma ruizianum. The IUCN Red List of Threatened Species 1998: e.T37076A10028837. http://dx.doi.org/10.2305/IUCN.UK.1998.RLTS.T37076A10028837.en. Downloaded on 19 November 2016.