In this paper, 12 Hieracium names, based on the collection of De Wever which is kept in the Maastricht Natural History Museum (MAAS), are lectotypified: Hieracium murorum L. subsp. chloroprasinoides Zahn var. dubiosum Zahn in Soest, Hieracium laevigatum Willd. subsp. hypodasyphyllum Zahn in Soest, Hieracium vulgatum Fr. subsp. aspernatum Jord. var. lycopifoliiforme Soest et Zahn in Soest, Hieracium praecox Sch.Bip. subsp. medium (Jord.) Zahn var. fissifolium (Jord. ex Boreau) Zahn f. meerssenense Soest et Zahn in Soest, Hieracium laevigatum Willd. subsp. mixopolium Dhlst. var. mixopoliiforme Zahn in Soest, Hieracium murorum L. subsp. pilosuliforume Zahn in Soest, Hieracium maculatum Sm. subsp. arrectarium (Jord.) Zahn var. pinnatifidoides Zahn in Soest, Hieracium murorum L. subsp. sericellipes Zahn var. subcontractum Soest et Zahn in Soest, Hieracium murorum L. subsp. exotericum Jord. ex Boreau var. pseudosilvularifolium (Touton) Zahn f. subhirsutum Zahn in Soest, Hieracium vulgatum Fr. subsp. fastigiatum (Fr.) Zahn var. sublachenalii Zahn in Soest, Hieracium laevigatum Willd. subsp. brevihirsutulum Zahn var. terwormense Zahn in Soest, and Hieracium laevigatum Willd. subsp. weveri Zahn in Soest.

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Gorteria Dutch Botanical Archives

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Naturalis Biodiversity Center

R. Haveman, I. de Ronde, & N. Harle. (2020). Typification of Zahnian Hieracium names in the herbarium of De Wever in the Maastricht Natural History Museum. Gorteria Dutch Botanical Archives, 42(1), 46–55.