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Gastrolobium celsianum (Swan River pea)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Clade: Mirbelioids
Genus: Gastrolobium
R.Br. (1811)
Type species
Gastrolobium bilobum
Groups and species

See text

  • Brachysema R.Br. (1811)
  • Cryptosema Meisn. (1848)
  • Cupulanthus Hutch. (1964)
  • Jansonia Kippist (1847)
  • Nemcia Domin (1923)
  • Pontania Lem. (1844)

Gastrolobium is a genus of flowering plants in the family Fabaceae. There are over 100 species in this genus, and all but two are native to the south west region of Western Australia.

A significant number of the species accumulate monofluoroacetate (the key ingredient of the poison known commonly as 1080), which caused introduced/non native animal deaths from the 1840s in Western Australia. The controversy over the cause of the stock poisoning in that time involved the botanist James Drummond in a series of tests to ascertain the cause of the poisoning, which was determined to be caused primarily by the plants York Road poison (G. calycinum) and Champion Bay poison (G. oxylobioides).[2][3]

In the 1930s and 1940s C.A. Gardner and H.W. Bennetts identified other species in Western Australia, leading to the publication of The Toxic Plants of Western Australia in 1956.[4]

The base chromosome number of Gastrolobium is 2n = 16.[5]


Gastrolobium comprises the following species:[6][7][8][9][10]

Gastrolobium bilobum Group[edit]

Gastrolobium parviflorum Subgroup[edit]

Gastrolobium calycinum Group[edit]

Gastrolobium celsianum Group[edit]

Gastrolobium cruciatum Group[edit]

Gastrolobium floribundum Group[edit]

Gastrolobium heterophyllum Group[edit]

Gastrolobium ilicifolium Group[edit]

Gastrolobium obovatum Group[edit]

Gastrolobium pyramidale Group[edit]

Gastrolobium retusum Group[edit]

Gastrolobium spinosum Group[edit]

Gastrolobium villosum Group[edit]

Incertae Sedis[edit]

Species names with uncertain taxonomic status[edit]

The status of the following species is unresolved:[6][9][10]

  • Gastrolobium boormani Maiden & Betche
  • Gastrolobium compactum C.A. Gardner
  • Gastrolobium elachistum F.Muell.
  • Gastrolobium henfreyi Lem.
  • Gastrolobium huegelii Henfr.
  • Gastrolobium makoyanum Heynh.
  • Gastrolobium revolutum Crisp
  • Gastrolobium scorsifolium F.Muell.
  • Gastrolobium splendens Heynh.
  • Gastrolobium velutinum Lindl. ex J. Paxton
  • Gastrolobium verticillatum Heynh.
  • Gastrolobium whicherense G.Chandler & Crisp
  • Gastrolobium wonganense G.Chandler & Crisp

See also[edit]


  1. ^ Gastrolobium callistachys was previously a Declared Rare Flora in Western Australia, but is not currently. See FloraBase.
  2. ^ Gastrolobium graniticum is a Declared Rare Flora in Western Australia. See FloraBase.
  3. ^ Gastrolobium hamulosum is a Declared Rare Flora in Western Australia. See FloraBase.
  4. ^ Gastrolobium rigidum was previously a Declared Rare Flora in Western Australia, but is not currently. See FloraBase.
  5. ^ Gastrolobium glaucum is a Declared Rare Flora in Western Australia. See FloraBase.
  6. ^ Gastrolobium pycnostachyum is a Priority 2 species. See FloraBase.
  7. ^ Gastrolobium tomentosum was previously a Declared Rare Flora in Western Australia, but is not currently. See FloraBase.


  1. ^ Gastrolobium R.Br. Plants of the World Online. Retrieved 25 August 2023.
  2. ^ Aplin TEH (1967), York road poison and box poison, Western Australian Department of Agriculture, retrieved 1 November 2016
  3. ^ "Champion Bay Poison". Western Mail. Vol. XLIII, no. 2, 231. Western Australia. 15 November 1928. p. 42. Retrieved 1 November 2016 – via National Library of Australia.
  4. ^ Gardner CA, Bennetts HW, Gardner C, Bennetts H (1956), The toxic plants of Western Australia, West Australian Newspapers, Periodicals Division, retrieved 1 November 2016
  5. ^ Sands VE (1975). "The cytoevolution of the Australian Papilionaceae". Proceedings of the Linnean Society of New South Wales. 100: 118–155.
  6. ^ a b Chandler GT, Crisp MD, Cayzer LW, Bayer RJ (2002). "Monograph of Gastrolobium (Fabaceae: Mirbelieae)" (PDF). Australian Systematic Botany. 15 (5): 619–739. doi:10.1071/SB01010.
  7. ^ Chandler GT, Bayer RJ, Crisp MD (2001). "A molecular phylogeny of the endemic Australian genus Gastrolobium (Fabaceae: Mirbelieae) and allied genera using chloroplast and nuclear markers". Am J Bot. 88 (9): 1675–1687. doi:10.2307/3558413. JSTOR 3558413. PMID 21669702.
  8. ^ "ILDIS LegumeWeb entry for Gastrolobium". International Legume Database & Information Service. Cardiff School of Computer Science & Informatics. Retrieved 18 January 2017.
  9. ^ a b USDA; ARS; National Genetic Resources Program. "GRIN species records of Gastrolobium". Germplasm Resources Information Network—(GRIN) [Online Database]. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved 18 January 2017.
  10. ^ a b "The Plant List entry for Gastrolobium". The Plant List. Royal Botanic Gardens, Kew and the Missouri Botanical Garden. 2013. Retrieved 18 January 2017.

Further reading[edit]

External links[edit]