This is the first of a new series of miscellaneous contributions, by various authors, where hitherto unpublished data relevant to both the Med-Checklist and the Euro Med (or Sisyphus) projects are presented. This new series merges the well-known Med-Checklist Notulae and the Euro Med Notulae into one. The first instalment deals with the families Amaranthaceae, Boraginaceae, Caryophyllaceae, Compositae, Euphorbiaceae, Fagaceae, Labiatae, Leguminosae, Rosaceae, Scrophulariaceae, Umbelliferae and Gramineae. It includes new country and area records, taxonomic and distributional considerations for taxa in Bromus, Buglossoides, Carduus, Centaurea, Cotoneaster, Daucus, Dianthus, Euphorbia, Hieracium, Melica, Onobrychis, Pilosella, Ptilotus, Silene, Stachys, Verbascum and Xanthium and the validation and typification of names in Helictotrichon, Hieracium, Pilosella and Quercus.