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Szeląg, Z. 2025.
Hieracium sourekii
(Asteraceae), a new species in the
H. senescens
aggregate and the discovery of
H. subortum
in the Sudetes, Poland.
Phytotaxa
. 696, 3 (Apr. 2025), 217–223. DOI:https://doi.org/10.11646/phytotaxa.696.3.2.