Wilde planten in Nederland en België

Flora regni borussici, deel 9, A.G. Dietrich (1841)

English Botany, or Coloured Figures of British Plants, deel 3, J.E. Sowerby (1864)

Curtis's Botanical Magazine, deel 48 (1821)

Illustrations of the British Flora, Walter Hood Fitch (1924)

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