Examples of concept relationships between taxa. The circles in column "Illustration" represent two taxa (red circle = taxon a, white circle = taxon b). The square symbolizes all taxa of one checklist (red square = all taxa of checklist a, white square = all taxa of checklist b).

  
  Part of: Hüllbusch E, Güntsch A, Luther K, May R, Müller A, Riemenschneider F, Ludwig G (2024) A Concept-Aware API for the Taxonomic Checklist Infrastructure in Germany. Biodiversity Information Science and Standards 8: e135846. https://doi.org/10.3897/biss.8.135846