Tribulus occidentalis


Tribulus occidentalis, common name perennial caltrop,[1] is a species of flowering plant in the family Zygophyllaceae, which is native to Australia, and found in Western Australia,[1] Queensland,[2] South Australia[3] and the Northern Territory.[4] (However, Robyn Barker asserts that it is confined to the west coast of Western Australia.)[5]

Tribulus occidentalis
Fruit
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Zygophyllales
Family: Zygophyllaceae
Genus: Tribulus
Species:
T. occidentalis
Binomial name
Tribulus occidentalis

It is a prostrate perennial herb, covered in long shaggy haris and growing from 2 cm to 10 cm high. The leaves occur in pairs, and have leaflets in 7 - 10 pairs. The fruits have many spines,which are from 4 to 8 mm long. It grows on sandy soils and its yellow flowers can be seen from February to November.[1]

It was first described in 1849 by Robert Brown, from a specimen collected on the "west coast of Australia, or on some of its islands, in the Voyage of the Beagle."[6][7] There are no synonyms.[8]

References
  1. "Tribulus occidentalis". FloraBase. Western Australian Government Department of Parks and Wildlife.
  2. "Species profile | Queensland Department of Environment, land and water: Tribulus occidentalis". apps.des.qld.gov.au. 2014-10-20. Retrieved 2021-01-16.
  3. "Fact sheet for Tribulus occidentalis". www.flora.sa.gov.au. Retrieved 2021-01-16.
  4. "AVH: Tribulus occidentalis' occurrence data".
  5. R.M.Barker (2020). "Tribulus occidentalis". Flora of Australia. Canberra: Australian Biological Resources Study, Department of Agriculture, Water and the Environment. Retrieved 17 January 2021.
  6. "Tribulus occidentalis". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  7. Brown, R. in Sturt, C. (1849), Botanical Appendix. Narrative of an Expedition into Central Australia 2: 69
  8. "Tribulus occidentalis R.Br. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2021-01-16.


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