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Family Zygophyllaceae

HAWAII - NATURALIZED

Tribulus terrestris

Kaloko-Honokohau NP, Hawaii

PUNCTURE VINE or GOAT HEAD

Uncommon prostrate herb of disturbed sandy lowlands.  Leaves & young stems covered with silver hairs, petals 3 to 5mm long, leaflets 4 to 11mm long.  Hard fruit with stout thorns.  Weed native to the Mediterranean.