Die fränkischen Hybridmehlbeeren Sorbus cochleariformis und Sorbus x vagensis sind diploid und keine Apomikten, besitzen also sexuelle Fortpflanzung. Deshalb müssen sie heute als Synonyme der thüringer Sorbus x decipiens ( = Karpatisorbus x hybrida) gesehen werden. Diese Hybriden besitzen fertile Samen und bilden deshalb kleine Populationen, was anfangs den falschen Verdacht nährte, sie seien apomiktisch wie verschiedene Sorbus-Sippen westlicherer Regionen. Auch für die thüringer Sorbus acutiloba, Sorbus acutisecta, Sorbus heilingensis, Sorbus isenacensis, Sorbus multicrenata und Sorbus parumlobata trifft dies zu, was in 'Meyer, N., Gregor, T., Meierott, L. & Paule, J. (2014): Diploidy suggests hybrid origin and sexuality in Sorbus subgen. Tormaria from Thuringia, Central Germany' beschrieben wurde.

The Franconian Sorbus cochleariformis and Sorbus x vagensis are diploid and not apomictic, and propagate sexually. So today they have to be seen as synonyms of the Thuringian Sorbus x decipiens ( = Karpatisorbus x hybrida). Those hybrid clans have fertile seed and create small populations, which initially lead to the suspicion to be apomictic as several Sorbus clans of more Western regions. This applies also for the Thuringian Sorbus acutiloba, Sorbus acutisecta, Sorbus heilingensis, Sorbus isenacensis, Sorbus multicrenata, and Sorbus parumlobata, which has been described in 'Meyer, N., Gregor, T., Meierott, L. & Paule, J. (2014): Diploidy suggests hybrid origin and sexuality in Sorbus subgen. Tormaria from Thuringia, Central Germany'.