seed-dispersal

Natural World

Plants & Weeds

• Puncturevine / Goathead BurrsPuncturevine (Tribulus terrestris) is a lowgrowing annual weed whose fruit breaks into hard, viciously spined burrs goatheads. The burr is not an incidental annoyance: it is the plant's seeddispersal system, hitching rides on feet, paws, tires, and machinery.