Photo: Pycnanthemum tenuifolium.

Flowering tops. Helsinki bot.g. (Kump.), Finland. Planted. 1999-09-06.
Pycnanthemum tenuifolium Schrad. Engl.: narrow-leaved mountainmint, narrowleaf mountainmint, common horse-mint, slender horse-mint, slender mountain-mint. Suom.: jalominttu. Sven.: ädelmynta, amerikansk ädelmynta. Bot. syn.: Pycnanthemum flexuosum auct. non (Walt.) B. S. P.
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Photo: Pycnanthemum tenuifolium.