Persoonia laxa L.A.S.Johnson & P.H.Weston (1991:285)
Taxonomy & Nomenclature
Conservation Status
Missing (Weston, 1995:81; Silcock et al., 2019:SM:9 [as 'Likely extinct'], 2020:7, 2021:7 [both as "probably extinct" ]) or Extinct (Keith et al., 1997:64; Humphreys et al., 2019; Auld & Weston, 2020; Albani Rocchetti et al., 2022; POWO, 2023; Christenhusz & Govaerts, 2024)
Last record: June 1908 (Weston, 1995:81; Christenhusz & Govaerts, 2024 [as 1908])
IUCN RedList status: Extinct
This species has been identified as one of the 50 best candidates for de-extinction, ranking 23/50 (Albani Rocchetti et al., 2022).
"Failure to collect from such a well-botanised area for >100 years suggests it is extinct, especially given modification of its habitat"
(Silcock et al., 2019:SM:9, 2020:7, 2021:7)
Distribution & Habitat
New South Wales, Australia
"A shrub of oligrotrophic sclerophyll vegetation, found in northeast Sydney."
(Keith et al., 2017:323)
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]
Auld, T. and Weston, P. (2020). Persoonia laxa. The IUCN Red List of Threatened Species 2020: e.T113204000A113309830. https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T113204000A113309830.en. Downloaded on 27 June 2021.
Benson, D. and McDougall, L. (2000). Ecology of Sydney plant species. Part 7b Dicotyledon families Proteaceae to Rubiaceae. Cunninghamia 6(4): 1017-1202.
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]
Department of the Environment. (2015). Persoonia laxa in Species Profile and Threats Database, Department of the Environment, Canberra. Available from: http://www.environment.gov.au/sprat. Accessed Sat, 7 Feb 2015 18:00:38 +1100.
Hnatiuk, R. J. (1990). Census of Australian vascular plants. Australian Flora and Fauna Series 11: 1-650.
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]
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Keith, David A., Chalson, Jane M. and Auld, Tony D. (1997). Assessing the status of threatened plants: A new methodology and an application to the vascular flora of New South Wales. Project No. 450, Endangered Species Program. Canberra: Biodiversity Group, Environment Australia.
POWO. (2023). Persoonia laxa L.A.S.Johnson & P.H.Weston. Plants of the World Online (online resource). Royal Botanic Gardens, Kew, United Kingdom. Available at: https://powo.science.kew.org/ [Accessed 8 December 2023]
Silcock, Jen L., Field, Ashley R., Walsh, Neville G. and Fensham, Roderick J. (2019). To name those lost: assessing extinction likelihood in the Australian vascular flora. Oryx 54(2): 167-177. https://doi.org/10.1017/S0030605318001357 [Supplementary Material]
Silcock, Jen L., Collingwood, Teghan, Llorens, Tanya and Fensham, Rod. (2020). Action Plan for Australia's Imperilled Plants. Brisbane: NESP Threatened Species Recovery Hub. 339 pp.
Silcock, Jen L., Collingwood, Teghan, Llorens, Tanya and Fensham, Rod. (2021). Action Plan for Australia's Imperilled Plants. Brisbane: NESP Threatened Species Recovery Hub. 342 pp.
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.
Weston, P. H. (1995). Persoonia, pp. 50-125. In: McCarthy, Patrick (ed.). Flora of Australia Volume 16, Elaeagnaceae, Proteaceae 1. Melbourne: CSIRO Australia. xxi + 522 pp. [p. 81]
Weston, P. H. (2017). Persoonia laxa. In: Flora of Australia. Australian Biological Resources Study, Department of the Environment and Energy, Canberra. https://profiles.ala.org.au/opus/foa/profile/Persoonia%20laxa [Date Accessed: 14 January 2020]
Woinarski, John C. Z., Braby, M. F., Burbidge, A. A., Coates, D., Garnett, S. T., Fensham, R. J., Legge, S. M., McKenzie, N. L., Silcock, J L. and Murphy, B. P. (2019). Reading the black book: The number, timing, distribution and causes of listed extinctions in Australia. Biological Conservation 239: 108261. https://doi.org/10.1016/j.biocon.2019.108261