Galeopsis is a genus of annual herbaceous plants native to Europe and Asia. Members of this genus often have common names ending in hemp-nettle or hempnettle.[2] Some species are naturalized in North America and New Zealand.[1][3][4][5]
The plants are poisonous.[6] Several species are widespread weeds[2] and some are used as medicinal herbs.[7][8]
Galeopsis × acuminata Rchb. - Germany (G. pubescens × G. tetrahit)
Galeopsis bifida Boenn. – bifid hemp-nettle, split-lip hemp-nettle, splitlip hempnettle, common hemp-nettle, and large-flowered hemp-nettle - widespread across much of Europe and Asia; naturalized in North America
Galeopsis × carinthiaca Porsch ex Fiori - Italy, Czech Republic (G. bifida × G. pubescens)
Galeopsis × haussknechtii Ludw. - Czech Republic (G. ladanum × G. segetum)
Galeopsis ladanum L. - widespread across much of Europe and Asia; naturalized in scattered sites in North America
Galeopsis × ludwigii Hausskn. - Germany, Czech Republic (G. bifida × G. tetrahit)
Galeopsis speciosa Mill. – large-flowered hemp-nettle, Edmonton hempnettle - northern & central Europe, Siberia; naturalized in Canada
Galeopsis tetrahit L. – common hemp-nettle, brittlestem hempnettle - southern & central Europe from Portugal to Russia; naturalized in New Zealand and North America
Galeopsis × wirtgenii F.Ludw. ex Briq. - France, Czech Republic