Atlas Florae Europaeae notes 25. Taxonomic circumscription and nomenclature of Sorbus danubialis (Rosaceae)
31 July 2015
Somlyay, Lajos; Sennikov, AlexanderThe original material of Sorbus danubialis (Jáv.) Prodan and the most similar taxa described from Hungary (S. javorkae (Soó) Kárpáti, S. sooi (Soó) Kárpáti & Soó and S. pseudodanubialis Kárpáti) have been examined along with other specimens cited either as referable to those taxa or to S. cretica (Lindl.) Fritsch in the monograph of Sorbus in Hungary and adjacent countries by Kárpáti. Lectotypes are designated for S. javorkae and S. sooi; these two names and S. pseudodanubialis are reduced to synonymy of S. danubialis because of insignificant differences in morphology. Diagnostic characters and the distribution of S. danubialis are discussed. A new description and a map of the distribution in Hungary are provided for this species in its revised circumscription. The authorship of S. danubialis is discussed. The principal infraspecific taxa in the “Flora Hungarica” of Jávorka (1924–1925) are interpreted as validly published at the rank of subspecies under Art. 37.5.