[1
]Fondation J.‐M. Aubert Champex‐Lac Switzerland
[2
]Department of Botany and Plant Biology Section of Biology University of Geneva Chambésy
Switzerland
[3
]Department of Botany and Biodiversity Research University of Vienna Vienna Austria
[4
]Institute of Environmental Sciences University of Castilla‐La Mancha Toledo Spain
[6
]Research Center of the Slovenian Academy of Sciences and Arts Ljubljana Slovenia
[7
]University of Nova Gorica Nova Gorica Slovenia
[8
]Academy of Sciences and Arts of the Republic of North Macedonia Skopje North Macedonia
[9
]Department of Agricultural, Food and Environmental Science University of Perugia Perugia
Italy
[10
]Iluka Chair in Vegetation Science and Biogeography Harry Butler Institute Murdoch
University Perth WA Australia
[11
]Department of Geography and Environmental Studies Stellenbosch University Matieland,
Stellenbosch South Africa