Prasophyllum colemaniarum R.S.Rogers (1923:337)

Lilac leek-orchid



Taxonomy & Nomenclature

Synonym/s: Paraprasophyllum colemaniarum (R.S.Rogers) M.A.Clem. & D.L.Jones in Austral. Orchid Rev. 84(5): 34 (2019); Prasophyllum colemanaePrasophyllum colemaniae



Considered a synonym of Prasophyllum odoratum by (Humphreys et al., 2019).


"very closely related to P. spicatum and P.truncatum, but differing in its hardly recurved labellum, pinkish flowers and pouched base to the lateral sepals"

(Silcock et al., 2019:SM:8)



"Species was originally named P. colemanae, but epithet changed to feminine colemaniarum in 2018"

(Silcock et al., 2019:SM:8)


Conservation Status

Missing (Silcock et al., 2019:SM:8, 2020:7, 2021:7 [each as 'probably extinct']) or Extinct (POWO, 2023) or invalid (synonym of P. odoratum) (Humphreys et al., 2019)

Last record: 1922; 1924 (Silcock et al., 2019:SM:8, 2020:7, 2021:7)


"Site of population was regularly visited until the 1970s when it was destroyed and plant not seen; eastern suburbs of Melbourne very well botanically searched area... site of collection, a rail reserve, was well-known and regularly visited up to the 1970s when it was destroyed by the upgrade of the rail line"

(Silcock et al., 2019:SM:8)



near Ringwood, Victoria, Australia


Biology & Ecology










Original scientific description:

R.S.Rogers Trans. & Proc. Roy. Soc. South Australia 47: 337 (1923)


Other references:

Bates, R. J. (1994). Prasophyllum. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne.

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

Clements, Mark A. and Jones, David L. (2019). Notes on Australasian Orchids 5: Paraprasophyllum, a new genus in Prasophyllinae (Diurideae). Australian Orchid Review 84(5): 25-38 [34].

Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.

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. [Supplementary Dataset 1]

POWO. (2023). Prasophyllum colemaniarum R.S.Rogers. Plants of the World Online (online resource). Royal Botanic Gardens, Kew, United Kingdom. Available at: [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. [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.

W.C.M.C. (1996). Threatened plant database of the World Conservation Monitoring Centre. W.C.M.C., Cambridge, U.K.

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.


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