Viola lutea subsp. calaminaria (synonym Viola calaminaria) is a subspecies of V. lutea, in the violet family, the Violaceae. The plant occurs from Kelmis...

infraspecifics are V. lutea subsp. calaminaria which occurs in the southernmost Netherlands and eastern Belgium, and V. lutea var. westfalica, which...

Viola lutea var. westfalica, also known as high calamine pansy, Westphalia pansy, or zinc pansy, is a variety of violet native to Westphalia, Germany...

Viola lutea subsp. calaminaria, also known as the zinc violet, grows in soils high in zinc....