| Author |
| Pertti Uotila (Helsinki) |
| Editorial assistance |
| Minna Brunfeldt; Inkeri Lehtinen (Helsinki) |
| Bibliographical and nomenclatural advice |
| Gianniantonio Domina (Palermo) |
| Taxonomic advice |
| Avinoam Danin (Jerusalem); Portulaca |
| Common names |
| Carmen Begerock (Berlin) Anthos (www.anthos.es; 2010). Information System of the plants of Spain. Real Jardín Botánico, CSIC - Fundación Biodiversidad. (for names from the Iberian Peninsula and the Balearic Islands). |