Holwortel

•TraitCH — CC BY 4.0TraitCH 2.0 contributors; imported as source-preserving NaturKompass taxon evidence.

•Interaktionsdaten via GloBI (CC-BY 4.0)

•Middleton-Welling_2020

•FloraWeb / BfN

•EIVE 1.0 — Dengler et al. (2023), DOI: 10.3897/VCS.98324 (CC BY 4.0)

•GBIF Backbone Taxonomy — GBIF Secretariat (2024), DOI: 10.15468/39omei (CC BY 4.0)

•TRY Categorical Traits (ID3) — Kattge et al. (2012), DOI: 10.17871/TRY.3 (CC BY 3.0)

•TRY Global Spectrum (ID81) — Díaz et al. (2016/2021), DOI: 10.17871/TRY.81 (CC BY)

•Checklist Alien Plants Belgium — Verloove F (2023), Botanic Garden Meise (CC BY 4.0)

•Govaerts R et al. (2025) — World Checklist of Vascular Plants (WCVP) v14. Royal Botanic Gardens, Kew. DOI: 10.34885/xs7h-ze42 (CC BY 4.0)