1. School of Biosciences and Veterinary Medicine, University of Camerino – Floristic Research Center of the Apennine, National Park of Gran Sasso and Laga mountains, San Colombo, I-67021 Barisciano (L'Aquila) (Italy) fabio.conti@unicam.it
2. Herbarium of the University of Vienna (WU), Division of Systematic and Evolutionary Botany, Department of Botany and Biodiversity Research, Faculty Centre of Biodiversity, University of Vienna, Rennweg 14, A-1030 Vienna (Austria)
3. Research Group Plant Biogeography, Division of Systematic and Evolutionary Botany, Department of Botany and Biodiversity Research, Faculty Centre of Biodiversity, University of Vienna, Rennweg 14, A-1030 Vienna (Austria)