New species of Hieracium are described in Sweden, highlighting biodiversity and ecological importance.
Nineteen new, presumably apomictic species of Hieracium sect. Tridentata , namely Hieracium anisodontum, H. bicoloriceps, H. disparifolium, H. ditrichum, H. erectifolium, H. ferox , H. lapsanae, H. luteoviride, H. megaplicatum, H. multifolium, H. paer‐haraldii, H. perpendiculum, H. phaeochlorum, H. prasiniceps, H. semirigidum, H. serriolum, H. spinophytoides, H. svensonii, H. xantholineatum , and one species of H. sect. Foliosa, namely H. hesperidifrons are described from Sweden or raised from infraspecific to specific rank. In addition, the previously invalidly published H. melanostigma is validated. Apart from morphological descriptions, illustrations and maps showing the distribution of all species are provided.
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Nilsson et al. (2026) studied this question.