Subspecies
Nine subspecies are accepted: • Polygala nicaeensis subsp. caesalpini – southern France and northeastern Spain • Polygala nicaeensis subsp. corsica – Corsica • Polygala nicaeensis subsp. gariodiana – southeastern France and northwestern Italy • Polygala nicaeensis subsp. gerundensis – Spain • Polygala nicaeensis subsp. italiana – Italy • Polygala nicaeensis subsp. mediterranea – northwestern Africa, Italy, former Yugoslavia, Albania, Bulgaria, Greece, and the East Aegean Islands • Polygala nicaeensis subsp. nicaeensis – southeastern France and northwestern Italy • Polygala nicaeensis subsp. peninsularis – Italy • Polygala nicaeensis subsp. tomentella – Greece ==References==