Photo: Mentha longifolia 5.

Flowers with 4 butterflies. Helsinki, Finland. Planted. 2003-09-08.

Mentha longifolia (L.) Hudson
Engl.: silver mint, biblical mint, horsemint, wild mint.
Deu.: Ross-Minze, Silberminze.
Suom.: harmaaminttu.
Sven.: gråmynta.
Bot. syn.: Mentha sylvestris L.