Allocasuarina portuensis L.A.S.Johnson (1989:198)
Nielsen Park she-oak
Taxonomy & Nomenclature
Conservation Status
Extinct in the Wild (Silcock et al., 2019:SM:5, 2020:7, 2021:7; Low & Booth, 2023; POWO, 2023; Christenhusz & Govaerts, 2024)
Last wild record: 1986 (Christenhusz & Govaerts, 2024); 1998 (Silcock et al., 2019:SM:5, 2020:7, 2021:7)
"When first collected in 1986, population was 10 plants (eight females) over 100 m. By 1998, only two females remained. This original wild population is now extinct but translocated individuals survive"
(Silcock et al., 2020:7, 2021:7)
Distribution
Sydney, New South Wales, Australia
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Johnson, L. A. S. (1989). Appendix: Allocasuarina, pp. 191-199 [198]. In: George, Alexander S. (ed.). Flora of Australia, Volume 3 Hamamelidales to Casuarinales. Canberra: AGPS.
Other references:
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]
Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.
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.
Low, Tim and Booth, Carol. (2023). GONE: Australian animals extinct since the 1960s. Invasive Species Council Inc.
POWO. (2023). Allocasuarina portuensis L.A.S.Johnson. 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 2020. 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 2021. Brisbane: NESP Threatened Species Recovery Hub. 342 pp.
Wilson, K. L. and Johnson, L. A. S. (1989). Casuarinaceae, pp. 100-174 [152,153]. In: George, Alexander S. (ed.). Flora of Australia, Volume 3 Hamamelidales to Casuarinales. Canberra: AGPS.