They have hard, stout spines, up to seven millimeters long. There are hundreds and hundreds of these nutlets, probably thousands, lying in streets all over town, and on country roads. They almost resemble thumbtacks — in fact “tackweed” is one of the alternate popular names for the plant. And the seeds have a similar effect to thumbtacks on bicycle tires.
technorati tags:puncturevine, goatheads, thorns, flat, Tribulus+terristris
It's official. Puncturo lives..
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