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  • COMMON NAME: Caltrop
  • ARABIC: قطب، زهر
  • BOTANICAL NAME: Tribulus parvispinus Presl
  • SYNONYMS: T. bispinulosus
  • FAMILY: ZYGOPHYLLACEAE
  • KIND: Native
  • EMIRATE: Sharjah
  • GROWTH FORMS: Herbs
  • HABITATS: Sandy
  • TYPES: Annual Biennial
Flora of the United Arab Emirates V1 & 2, Fawzi M.Karim, Nael M.Fawzi; reviewed by Fatima Al-Ansary. Al-Ain: United Arab Emirates University, 2007.
Prostrate, annual or biennial herb, up to 25 cm tall. Fruit small, mericarps muricate, with 2 spines, very similar to T.terrestris L. in all aspects, but very much smaller and with an overall silvery aspect. Flowering from February to June.
Sandy gravely soil.