1) Lemon mint 2) Monarda 3) Monarda citriodora 4) Wild bergamot 
• (n.) A coarse American plant of the Mint family (Monarda punctata). • (n.) In England, the wild mint (Mentha sylvestris).
Horse'mint` noun (Botany) (a) A coarse American plant of the Mint family ( Monarda punctata ). (b) In England, the wild mint ( Mentha sylvestris ). 
[n] - tall erect perennial or annual having lanceolate leaves and heads of purple-spotted creamy flowers 2. [n] - a coarse Old World wild water mint having long leaves and spikelike clusters of flowers
noun a coarse Old World wild water mint having long leaves and spikelike clusters of flowers; naturalized in the eastern United States
a wild mint, Mentha longifolia, introduced into America from Europe, having spikes of lilac flowers. · any of various other wild mints as the New World Monarda punctata.