Genus: Tvetannslekta (Lamium)
Other names: tvitann
Norwegian name: Tvetannslekta
Systematics :
| Kingdom | Planteriket (Plantae) | ||||||||
| Artificial group | Vascular plant (Tracheophytes) | ||||||||
| Superphylum | Frøplanter (Spermatophyte) | ||||||||
| Phylum | Dekkfrøete blomsterplanter (Magnoliophyta) | ||||||||
| Subclass | Tofrøblader (Magnoliidae) | ||||||||
| Family | Leppeblomstfamilien (Lamiaceae) | ||||||||
| Genus | Tvetannslekta (Lamium) | ||||||||
| Species | Dauvnesle (Lamium album) | ||||||||
| Species | Flekktvetann (Lamium maculatum) | ||||||||
| Species | Fliktvetann (Lamium hybridum) | ||||||||
| Species | Myktvetann (Lamium amplexicaule) | ||||||||
| Subspecies | Åkertvetann (Lamium amplexicaule subsp. amplexicaule) | ||||||||
| Subspecies | Orienttvetann (Lamium amplexicaule subsp. orientale) | ||||||||
| Species | Red Dead-nettle (Lamium purpureum) | ||||||||
| Species | Vrangtvetann (Lamium confertum) | ||||||||
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