This is the fifth of a series of miscellaneous contributions, by various authors, where hitherto unpublished data relevant to the Euro Med (or Sisyphus) Project are presented. This instalment deals with the families Betulaceae, Chenopodiaceae, Leguminosae, Plumbaginaceae, Portulacaceae, Ranunculaceae, Salicaceae and Gramineae, including new country and area records for taxa of Avena, Chamaecytisus (Cytisus), Dichanthium, Eragrostis, Festuca, Holcus, Poa and Portulaca, and the validation of names in the genera Alnus, Anemonastrum, Dactylis, Homalotrichon, Limonium, Salix and Salsola.