Pennyroyal
Mentha pulegium
Pennyroyal as seen along the Columbia River Shore at the Sandy River delta........September 25, 2010.
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Close-ups of the verticils of pennyroyal as seen along the Columbia River Shore at the Sandy River delta.......September 25, 2010. Note the leaves subtending each verticil which are small and deflexed.
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Pennyroyal growing amongst other forbs along the Columbia River shoreline at the east side of the Sandy River Delta, Troutdale, Oregon........September 8, 2012.
Paul Slichter