Coefficient of Conservatism:
Coefficient of Wetness:
R. W. Smith
Escaped and often very well established along rivers and streams, in marshes and ditches, on shores, in open areas of swamps; and in moist pastures, clearings, thickets, and disturbed ground. First collected in 1860 in Washtenaw Co.
Peppermint originated as a naturally occurring sterile hybrid between M. aquatica and M. spicata, and has been selected in cultivation, like spearmint, for glabrousness.