1. Área de Biodiversidad y Conservación, Universidad Rey Juan Carlos, C/ Tulipán s/n 28933 Móstoles, Madrid, Spain
2. Cryptogamic Botany, Swedish Museum of Natural History, P.O. Box 50007 SE‐104 05, Stockholm, Sweden
3. Botany Department, Natural History Museum, Cromwell Road, SW7 5BD, London, England
4. Department of Biology, Duke University, Box 90338 NC 27708 Durham, USA