Pterostylis valida (Nicholls) D.L.Jones (1994:191)
Robust greenhood orchid, Robust greenhood
Taxonomy & Nomenclature
Synonyms: Pterostylis squamata var. valida Nicholls in Vict. Naturalist 58: 115 (1941); Oligochaetochilus validus (Nicholls) D.L.Jones & M.A.Clem. in Austral. Orchid Res. 4: 78 (2002)
Considered a synonym of P. excelsa by (Govaerts, 2003; Humphreys et al., 2019).
Conservation Status
Last record: 1941 (Silcock et al., 2019:SM:17)
Rediscovered in 2009; 2010 (Silcock et al., 2019:SM:17)
Distribution
Victoria, Australia
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Nicholls, W. H. (1941). Two New Varieties of Orchids.Victorian Naturalist V 58: 115.
Other references:
Backhouse, Gary N., Bates, Robert J., Brown, Andrew P. and Copeland, Lachlan M. (2016). Checklist of the Orchids of Australia Including its Island Territories. Version 1. Unpublished. 139 pp.
Backhouse, Gary N., Bates, Robert J., Brown, Andrew P. and Copeland, Lachlan M. (2019). Checklist of the Orchids of Australia Including its Island Territories, second edition. Melbourne. 148 pp.
Backhouse, Gary and Cameron, David. (2005). Application of IUCN 2001 Red List Categories in Determining the Conservation Status of Native Orchids of Victoria, Australia. Selbyana 26(1-2), Proceedings of the Second International Orchid Conservation Congress (2005), pp. 58-74. https://www.jstor.org/stable/41760174
DEECA [Department of Energy, Environment and Climate Action]. (2023). Flora and Fauna Guarantee Act 1988 Threatened List: June 2023. Published report by The State of Victoria Department of Energy, Environment and Climate Action, Melbourne, Victoria.
DEECA [Department of Energy, Environment and Climate Action]. (2025). Flora and Fauna Guarantee Act 1988 Threatened List: March 2025. Published report by The State of Victoria Department of Energy, Environment and Climate Action, Melbourne, Victoria.
Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.
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]
Jones, D. L. (1994). Muelleria 8(2): 191.
Kuiter, Rudie H. (2016). Orchid Pollinators of Victoria, 4th edition. Seaford: Aquatic Photographics.
Kuiter, Rudie H. (2017). Identity of Pterostylis valida (Orchidaceae). Short paper 3, June 2017. Unpublished.
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]
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.
http://www.australiangeographic.com.au/blogs/ag-blog/2010/12/extinct-orchid-found-after-70-years/
http://www.bendigoadvertiser.com.au/story/1901200/extinct-orchid-flowers-at-inglewood/?cs=3380