Photo: Pycnanthemum verticillatum 2.

Photo: Pycnanthemum verticillatum 2.

Flowering tops. Annala, Helsinki, Finland. Planted. 2000-08-26.


Pycnanthemum verticillatum (Michx.) Pers.
Engl.: whorled mountain mint, American mountain-mint.
Deu.: Amerikanische Bergminze.
Bot. syn.: Koellia pilosa (Nutt.) Britt.