1. Department of Land, Environment, Agriculture and Forestry, University of Padova , Legnaro (PD) , Italy
2. Department of Agricultural, Forest and Food Sciences, Università degli Studi di Torino , 10095 Grugliasco (TO) , Italy
3. Forest Biometrics Laboratory, Faculty of Forestry, ‘Stefan cel Mare’ University of Suceava , 720229 Suceava , Romania
4. School of Life Sciences, Arizona State University , Tempe, AZ 85281 , USA
5. Tecnológico Nacional de México/ITS de Irapuato , Irapuato, Guanajuato , Mexico
6. Department of Research, Conservation, and Collections, Desert Botanical Garden , Phoenix, AZ 85008 , USA