mountain mint
/ˌmaʊntɪn ˈmɪnt/noun
1 US. The plant Oswego tea, Monarda didyma. Compare mountain balm. Now rare.
2 US. Any of various plants of the genus Pycnanthemum (family Lamiaceae (Labiatae)), whose leaves when crushed smell of mint.
Origin
Late 16th century (in an earlier sense). From mountain + mint, after post-classical Latin calamentum montanum.