WoRMS source details
(1923). Bornm. & Zahn in Engler, Pflanzenr. 82. 1923.
310286
1923
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Date
action
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Hieracium hoppeanum subsp. lydium Bornm. & Zahn accepted as Pilosella hoppeana subsp. macrantha (Ten.) S.Bräut. & Greuter (original description)