translate English to French: Hoary Mountain-mint — Reprinted with permission from The New Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada (Volume 3), copyright 1952.
Pycnanthème gris – Reproduction autorisée d’un dessin extrait de The New Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada (Volume 3), copyright 1952.