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SZELĄG, Z. and VLADIMIROV, V. 2022. <em>Senecio</em> ×<em>riloensis</em> (Asteraceae), a new natural hybrid between<em> S. hercynicus</em> and <em>S. transylvanicus</em> from Bulgaria. Phytotaxa. 572, 2 (Nov. 2022), 144–148. DOI:https://doi.org/10.11646/phytotaxa.572.2.2.