Polycarpon tetraphyllum subsp. diphyllum (Cav.) O. Bolòs & Font Quer in Collect. Bot. (Barcelona) 6: 356. 1962
Polycarpon tetraphyllum subsp. diphyllum in Collect. Bot. (Barcelona) 6: 356. 1962
is new combination for Polycarpon diphyllum, Icon. 2: 40. 1793
Polycarpon tetraphyllum subsp. diphyllum in Collect. Bot. (Barcelona) 6: 356. 1962