Pycnanthemum tenuifolium, or the narrowleaf mountainmint, belongs to the Lamiaceae family of the Lamiales order.
Pycnanthemum tenuifolium, the narrowleaf mountainmint, slender mountainmint, common horsemint or Virginia thyme, is a plant in the mint family, Lamiaceae. Lamiaceae Family: Order: Lamiales 
