The original taxonomic circumscription of Sorbus pannonica was uncovered in an inventory of historical herbarium collections. The presumed original material of the name included several taxa. The selected lectotype belongs to a species with elongate leaves, which are slightly obovate and minutely lobed apically, typically with a narrowly cuneate base and a short triangular apex. This triploid, presumably apomictic species seems to be endemic to the Transdanubian Mts. (Vértes, eastern Bakony Mts., eastern Balaton Uplands) within western Hungary. A new description and a revised distribution map of S. pannonica are provided, and the species is compared with the most similar taxa from Hungary. The provisional IUCN conservation assessment of S. pannonica is Vulnerable (VU).
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Vol. 52 • No. 3–4