Mentha species - Mints

Mentha aquatica - Water Mint

Mentha spicata - Spear Mint

Mentha x piperita - Peppermint

Mentha x piperta, is a hybrid of, M. spicata and M. aquatica. From the former it takes the characterstics of sharp leaf teeth and usually glabrous leaves and stems. From aquatica it gets petiolate leaves and a much broader inflorescence, as well as the modification of the scent. This specimen differs from usual piperta in retaining the narrow inflorescence of spicata, but has arguably some genetic input from aquatica in its petiolate leaves. Most hybrids have inserted stamens.

Mentha arvensis - Corn Mint

Mentha arvensis x spicata = M. x gracilis

Mentha spicata x suaveolens = M. x villosa

Mentha aquatica x arvensis = M. x verticillata