Brede dovenetel - Lamium confertum

English Botany, or Coloured Figures of British Plants, deel 7, J.E. Sowerby (1867)

Lamium intermedium

Flora Danica, Georg Christian Oeder e.a. (1761-1883)

Lamium intermedium

Iconographia botanica seu plantae criticae, H.G.L. Reichenbach (1823-1832)

Lamium intermedium