Puncture Vine
Tribulus terrestris

Family: Caltrop (Zygophyllaceae)
AKA: Goat's Head, Caltrop
Photo taken on: July 27, 2009
Location: White Rock, NM
Life Zones: Plains
Habitat: Sandy areas, roadsides

A low, creeping plant with many hairy branches. Tiny flowers produce a fruit that is hard and spiny. Leaves are divided into leaflets. Considered noxious in Colorado.

Flora of North America reference.