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| Eurasian perennial mint have small lilac-blue flowers and ovate leaves; Eurasian perennial mint have small lilac-blue flowers and ovate leaves; yields an aromatic oil ❲Mentha pulegium❳ | ||||
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| erect hairy branching American herb having purple-blue flowers; erect hairy branching American herb having purple-blue flowers; yields an essential oil used as an insect repellent and sometimes in folk medicine ❲Hedeoma pulegioides❳ |