Mentha x cordifolia Opiz ex Fresen.
Engl.: improved spearmint, Kentycky colonial mint, yerba buena.
Deu.: Kentucky spearmint.
Bot. syn.: See Mentha spicata x suaveolens.
I have no articles for this botanical term, but there might be some for the next level down (if found).
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Plant Healer Magazine: Very relevant to the practitioner.
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