Verbena rigida, one of the vervains that I saw beside a dirt road yesterday. It has a famous cousin Blue Vervain aka Verbena officinalis that was used by the ancient egyptians. Verbena brasiliensis aka Brasilian vervain is also common here in the south. Verbena urticifolia aka white vervain is also common, see above. All 4 have square stems like mints but are not mints
And there is a more distant cousin Verbesina virginica aka Frost Weed. All 5 are similar medicinally speaking.
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