Article

This is the seventeen of a series of reports of chromosomes numbers from Mediterranean area, peri-Alpine communities and the Atlantic Islands, in English or French language. It comprises contributions on 28 taxa: Allium, Ornithogalum from Italy and France, by K. F. Caparelli & L. Peruzzi (Nos 1617-1619); Cytisus from Italy and Greece, by T. Cusma Velari, L. Feoli Chiapella & V. Kosovel (Nos 1620-1622); Chenopodium, Atriplex from Bulgaria, by N. Grozeva (Nos 1623-1630); Crotalaria, Cytisus, Genista, Hesperolaburnum, Stauracanthus, Ulex from Morocco and Spain, by H. Tahiri, P. Cubas & C. Pardo (Nos 1631-1639); Hieracium, Hypochoeris, Jacobaea from Sicily, by A. Geraci, E. Di Gristina & R. Schicchi (Nos 1640- 1644).