Twelve new species of Hieracium sect. Tridentata (Asteraceae) from southern Sweden

Twelve new, presumably apomictic species of Hieracium sect. Tridentata, namely H. arcanum, H. versifrons, H. hyperoptum, H. irrugantifrons, H. karolinae, H. leucophlebium, H. melanostigma, H. neomixopolium, H. oxyodontum, H. rostockense, H. subcreperum and H. verecundum are described from the Gotaland region of southern Sweden. Apart from morphological descriptions, illustrations and maps showing the distribution of all the species are provided.