Two diploid subspecies ofDactylis glomerataL. are recognized to be present in Italy.D. glomeratasubsp.aschersonianais present in mesic mixed broadleaved forests of Friuli (North-eastern Italy); its occurrence in other parts of the territory is questioned. D.glomeratasubsp.reichenbachiiis an endemic ofPinus sylvestriswoods of Alto Adige. Furthermore, diploid individuals have been observed irregularly scattered through Northern Italy. Such individuals are morphologically very variable, and do not deserve a particular taxonomic treatment.