Caltrop (species: Tribulus terrestris) in Lizard Island area: introduced plants (Lizard Island Field Guide)

Lizard Island area: introduced plants > Other Plants > Tribulus terrestris (gallery)

Tribulus terrestris

Caltrop

©Harry Rose: Caltrop (Tribulus terrestris), location unknown

Kingdom Plantae

Division Tracheophyta

Class Magnoliopsida

Order Zygophyllales

Family Zygophyllaceae

Genus Tribulus

Species Tribulus terrestris

Colours

Distinguishing features still need to be specified.

Plantae: Bull's Head (species: Tribulus cistoides)
has a larger flower (25 to 40 mm wide) than Tribulus terrestris (5 to 15 mm wide) according to Varghese et al (2006) based on comparisons in India and the Arabian Peninsula.

Colvill, A., M. Ahmet, S. Clag and B. Haigh (2004). Lizard Island fauna and flora sampling report.Queensland Parks and Wildlife Service. LIRS catalog number 10067.
Varghese, M., S.S. Yadav and J. Thomas (2006). Taxonomic status of some of the Tribulus species in the Indian subcontinent, Saudi Journal of Biological Sciences, 13(1): 7-12.