scale bar = 1cm.

Caltrop - native (Tribulus terrestris)

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Family: Zygophyllaceae (Twin-leaf family).

Native of Europe and Australia.

Occurrence: Rare in Central Victoria, where it may be introduced. A population in the Castlemaine railway reserve may have been brought in during transport operations.


Caltrop is a declared noxious weed and is Regionally Controlled in central Victoria. The spiny fruit can injure the feet of stock, and can contaminate wool. Caltrop is also poisonous to stock.


Photos: Caltrop. Railway reserve, Castlemaine.
2. Caltrop. Murray Valley Hwy, Kerang.
3: Flowers. 4, 5: The spiny fruit make this an unwelcome lawn or pasture plant.