Tribulus


Tribulus is a genus of plants in the family Zygophyllaceae and found in diverse climates and soils worldwide from latitudes 35°S to 47°N. The best-known member is T. terrestris, a widespread invasive species and weed.
Tribulus species are perennial, but some grow as annuals in colder climates. The leaves are opposite and compound. The flowers are perfect and insect-pollinated, with fivefold symmetry. The ovary is divided into locules that are in turn divided by "false septa".
Some species are cultivated as ornamental plants in warm regions. Some, notably T. cistoides, T. longipetalus, T. terrestris, and T. zeyheri, are considered weeds. Tribulus omanense is the national flower of Dubai. Thirteen species of Tribulus are accepted by The Plant List, but there are many names still unresolved and needing further study.

List of accepted species

  1. Tribulus adelacanthus R.M.Barker
  2. Tribulus arabicus Hosni
  3. Tribulus astrocarpus F.Muell.
  4. Tribulus bimucronatus Viv.
  5. Tribulus cistoides L.
  6. Tribulus cristatus C.Presl
  7. Tribulus echinops Kers
  8. Tribulus eichlerianus K.L.Wilson
  9. Tribulus excrucians Wawra
  10. Tribulus forrestii F.Muell.
  11. Tribulus hirsutus Benth.
  12. Tribulus hystrix R.Br.
  13. Tribulus incanus Hosni
  14. Tribulus kaiseri Hosni
  15. Tribulus macrocarpus F.Muell. ex Benth.
  16. Tribulus macropterus Boiss.
  17. Tribulus megistopterus Kralik
  18. Tribulus micrococcus Domin
  19. Tribulus minutus Leichh. ex Benth.
  20. Tribulus mollis Ehrenb. ex Schweinf.
  21. Tribulus occidentalis R.Br.
  22. Tribulus omanense Hosni
  23. Tribulus parvispinus C.Presl
  24. Tribulus pentandrus Forssk.
  25. Tribulus platypterus Benth.
  26. Tribulus ranunculiflorus F.Muell.
  27. Tribulus securidocarpus Engl.
  28. Tribulus spurius Kralik
  29. Tribulus suberosus H.Eichler ex R.M.Barker
  30. Tribulus subramanyamii P.Singh, G.S.Giri & V.Singh
  31. Tribulus terrestris L.
  32. Tribulus zeyheri Sond.

    Uses

T. terrestris has been cultivated to inhibit soil erosion and to improve soil moisture, texture, and water-holding capability in deserts and barren lands. Although T. terrestris extracts have been used in traditional medicine and as a dietary supplement for bodybuilders, there is no high-quality clinical evidence that it is effective or safe for these purposes.