Article

This is the twenty first of a series of reports of chromosome numbers from Mediterranean area, peri-Alpine communities and the Atlantic Islands, in English or French language. It comprises contributions on 16 taxa: Alyssum from Iran, by S. Bolourian, A. Tavassoli & M. Pakravan (Nos 1737-1743); Genista from Italy, Sardinia and Corse by T. Cusma Velari, L. Feoli Chiapella & G. Bacchetta (Nos 1744-1748); Genista from Greece, Cyprus and Israel, by T. Cusma Velari & L. Feoli Chiapella (Nos 1749-1750); Isoëtes from Sicily, by A. Troia, P. Marino & A. M. Orlando (No 1751), Pilosella from Italy, by E. Di Gristina, A. Geraci & P. Marino (No 1752).