Acianthus ledwardii Rupp, 1938



Taxonomy & Nomenclature

Invalid (synonym)


Conservation Status

Rediscovered prior to reduction to synonymy. Though (Humphreys et al., 2019:SD1) considers the species as valid and rediscovered.



Queensland (& New South Wales?), Australia


Biology & Ecology










Original scientific description:

Rupp, H. M. R. (1938). A new orchid for south Queensland Acianthus Ledwardii, sp. nov.. The Queensland Naturalist 10(6): 113.


Other references:

Hnatiuk, R.J. (1990). Census of Australian vascular plants. Australian Flora and Fauna Series 11: 1-650.

Humphreys, Aelys M. (2019). Global dataset shows geography and life form predict modern plant extinction and rediscovery. Nature Ecology & Evolution 3: 1043-1047. [Abstract] [Supplementary Dataset 1]

Kores, P. J. (1995). A systematic study of the genus Acianthus (Orchidaceae: Diurideae). Allertonia 7(3): 199-203.

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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