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Wildflowers with 5 Petals in the Columbia River Gorge of Oregon and Washington
]
The Caltrop Family in the Columbia River Gorge of Oregon and Washington
Zygophyllaceae
Puncture Vine:
Tribulis terrestris
Land Caltrop, Puncturevine, Puncture-vine, Puncture Vine
:
Tribulus terrestris
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Paul Slichter
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