Isotoma sessiliflora (E.Wimm.) Lammers (1999:75)

Taxonomy & Nomenclature

Synonym/s: Hypsela sessiliflora E.Wimm. in H.G.A.Engler (ed.), Pflanzenr., IV, 276b: 121 (1943)

Invalid (synonym of I. fluviatilis fluviatilis) (Albrecht et al., 2015; POWO, 2023)

Conservation Status

Invalid (synonym of I. fluviatilis fluviatilis) (Albrecht et al., 2015)

Last record: 1801-1805 (Albrecht et al., 2015:455); pre-1940 (Keith & Burgman, 2004:46)

Rediscovered in: 1999 (Albrecht et al., 2015:455) or 2001 (Keith & Burgman, 2004:46) prior to synonymisation

"A specimen collected at Homebush in 1951 and another collected at Agnes Banks in 1992 were provisionally identified as H. sessiliflora but were later re-determined as Isotoma fluviatilis (R.Br.) F.Muell. ex Benth."

(Albrecht et al., 2015:455)

Distribution

Sydney region, New South Wales, Australia

Biology & Ecology

Hypodigm

Media

References

Original scientific description:

Wimmer, F. E. in Engler, H.G.A. (1943), Das Pflanzenreich Heft 106: 121, fig. 31b.

Other references:

Albrecht, David E., Walsh, Neville G., Jobson, Richard W. and Knox, Eric B. (2015). The taxonomic status of Hypsela sessiliflora E.Wimm. (Campanulaceae: Lobelioideae). Telopea 18: 455-462.

Briggs, John D. and Leigh, John H. (1996). Rare or Threatened Australian Plants, revised edition. Collingwood, Victoria: CSIRO Publishing. x + 466 pp.

Department of the Environment. (2015). Hypsela sessiliflora in Species Profile and Threats Database, Department of the Environment, Canberra. Available from: http://www.environment.gov.au/sprat. Accessed Mon, 7 Dec 2015 21:21:26 +1100.

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]

Keith, David A. and Burgman, Mark A. (2004). The Lazarus effect: can the dynamics of extinct species lists tell us anything about the status of biodiversity? Biological Conservation 117: 41-48. https://doi.org/10.1016/S0006-3207(03)00261-1

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.

POWO. (2023). Isotoma fluviatilis subsp. fluviatilis. Plants of the World Online (online resource). Royal Botanic Gardens, Kew, United Kingdom. Available at: https://powo.science.kew.org/ [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. https://doi.org/10.1017/S0030605318001357 [Supplementary Material]

Tozer, M. G. (2000). The native vegetation of the Cumberland Plain, western Sydney. NSW National Parks and Wildlife Service, Sydney.

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.

Wiecek, B. (1992). Harden, G.J., ed. Flora of New South Wales. 3:131. Sydney, NSW: University of New South Wales Press.

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