Phlegmatospermum richardsii (F.Muell.) E.A.Shaw (1974:153)



Taxonomy & Nomenclature

Synonyms: Erysimum richardsii F.Muell. in Fragm. 10: 105 (1877); Sisymbrium richardsii (F.Muell.) F.Muell. in Syst. Census Austral. Pl.: 5 (1882); Scambopus richardsii (F.Muell.) O.E.Schulz in H.G.A.Engler (ed.), Pflanzenr., IV, 105(86): 260 (1924); Blennodia richardsii (F.Muell.) C.A.Gardner in Enum. Pl. Austr. Occ.: 45 (1930)


Conservation Status

Last record: 1880 (Silcock et al., 2019:SM:12)

Rediscovered in 1957 (collection); 1981 (recognition) (Silcock et al., 2019:SM:12)



Western Australia & South Australia, Australia


Biology & Ecology










Hewson, H. J. (1982). Brassicaceae (Cruciferae), pp. 231-357. In: George, A. S. (ed.). Flora of Australia, Vol. 8. Australian Government Publishing Service, Canberra.

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. [Supplementary Dataset 1]

POWO. (2023). Phlegmatospermum richardsii (F.Muell.) E.A.Shaw. Plants of the World Online (online resource). Royal Botanic Gardens, Kew, United Kingdom. Available at: [Accessed 11 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]


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