Vol. 1: Results of the First "Iter Mediterraneum" in south-eastern Spain, June-July 1988.
Vol. 2: A check-list of Sicilian fungi.
Vol. 3: Results of the Second "Iter Mediterraneum" in Israel, March-April 1989.
Vol. 4: Current research on the biology of threatened plant species of the Mediterranean Basin and Macaronesia: a database.
Vol. 5 (I & II): Proceedings of the VII OPTIMA Meeting in Borovetz, 18-30 July 1992.
Vol. 6: Contributions towards a checklist of Mediterranean Lichens
Vol. 7: Proceedings of the Workshops on "Conservation of the Wild Relatives of European Cultivated Plants".
Vol. 8: Catalogue des plantes vasculaires rares, menacées ou éndemiques du Maroc.
Vol. 9: The systematics of Anthemis L. (Compositae, Anthemideae) in W and C North Africa
Vol. 10: An annotated checklist of the flora of the Abruzzo.
Vol. 11: Results of the Fourth "Iter Mediterraneum" in Cyprus, April 1991.
Vol. 12: Catalogue of the benthic marine macroalgae of the Italian coast of the Adriatic Sea.
Vol. 13: Proceedings of the IX OPTIMA Meeting in Paris, 11-17 May 1998.
Vol. 14: Checklist of the Lichens and lichenicolous Fungi of the Iberian Peninsula and Balearic Islands.
Vol. 15: The officinal Flora of Sannio (Benevento, SE - Italy).
Vol. 16 (I & II): Proceedings of the X OPTIMA Meeting in Palermo, 13-19 September 2001.
Vol. 17: Results of the Third "Iter Mediterraneum" in Sicily, May-June 1990.
Vol. 18: Identification key and description of Mediterranean maquis litter microfungi.
Vol. 19: Prooceedings of the VI Conference on Plant Taxonomy in Alghero, 31 May - 2 June 2003.
Vol. 20: A catalogue of plants growing in Sicily.
Vol. 21: Prooceedings of the XI OPTIMA meeting in Beograd, 5-11 September 2004.
Vol. 22: Check-list of the Hornworts, Liverworts and Mosses of Italy.
Vol. 23: Prooceedings of the XII OPTIMA Meeting Pisa, 10-16 September 2007.
Vol. 24: Proceedings of the XIII OPTIMA Meeting. Antalya, 22-26 March 2010
Vol. 25: Results of Seventh “Iter Mediterraneum” in Peloponnese, Greece, May to June 1995.
Vol. 26: Results of fifth “Iter Mediterraneum” in Morocco, 8-27 June 1997.