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Hidalgo, O., Balant, M. and Pellicer, J. 2022.

Urospermum ×siljakii (Asteraceae), a new natural homoploid hybrid between U. dalechampii and U. picroides

. Phytotaxa. 544, 2 (Apr. 2022), 220–222. DOI:https://doi.org/10.11646/phytotaxa.544.2.8.