DOI

DOI pending. Trefle's Zenodo deposit is not live yet; cite the plain URL below in the meantime and update the citation once a DOI is assigned.

Citation formats

Plain text

Trefle (2026). Trefle: a global plants API. https://trefle.io — data licensed CC-BY-4.0.

APA

Trefle. (2026). Trefle: a global plants API [Data set]. https://trefle.io

BibTeX

@misc{trefle2026,
  title = {Trefle: a global plants API},
  author = {{Trefle}},
  year = {2026},
  url = {https://trefle.io},
  note = {Data licensed CC-BY-4.0}
}

Upstream credits

Trefle's compilation, structure and community corrections are published under CC-BY-4.0. Redistributing Trefle data keeps every upstream source's own credit intact — see the sources listed on the About page and the per-record sources array returned by the API.

If your work relies on plant name and distribution data, please also co-cite the World Checklist of Vascular Plants:

Govaerts, R., Nic Lughadha, E., Black, N. et al. The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. Sci Data 8, 215 (2021). https://doi.org/10.1038/s41597-021-00997-6