Lamium intermedium
English Botany, or Coloured Figures of British Plants, deel 7, J.E. Sowerby (1867)
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Lamium intermedium
Flora Danica, Georg Christian Oeder e.a. (1761-1883)
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Lamium intermedium
Iconographia botanica seu plantae criticae, H.G.L. Reichenbach (1823-1832)
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