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Trixago viscosa
Genera plantarum florae germanicae, Conspectus, deel 5, T.F.L. Nees von Esenbeck (1845)
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English Botany, or Coloured Figures of British Plants, deel 6, J.E. Sowerby (1866)
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Flora Scotica, deel 1, J. Lightfoot (1777)
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Plantae per Galliam, Hispaniam et Italiam observatae, J. Barrellier (1714)
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