Polygala caesalpini Bubani, Fl. Pyren. 3: 283. 1901 Fig. 1 ≡ Polygala nicaeensis subsp. caesalpini (Bubani) McNeill, Feddes Repert. 79: 32. 1968. Type. Spain. “ in Pyren. Merid Catalan Humid. Ad Gerona ”, 15 May 1851, P. Bubani s. n. (lectotype, designated here: UNIGE-HGE 036582!). In the protologue, Bubani (1901) mentions three syntypes: one specimen at page 175 of the Herbarium Cesalpino and two specimens collected by Bubani himself. The Herbarium of Andrea Cesalpino is preserved at FI! This specimen is very old and some parts are missing. According to Stafleu and Cowan (1976), the collections by Bubani are conserved at GE. In this Herbarium, we traced the two specimens mentioned in the protologue (UNIGE-HGE 036582!, UNIGE-HGE 036583!), one collected in Gerona and the other “ supra Salsona ”, each bearing three individuals. The specimen from Girona, more complete and better conserved, is selected here as lectotype. All the three traced specimens match the protologue and correspond to the current application of the name as P. nicaeensis subsp. caesalpini (Heywood 1968; McNeill 1968). Paiva (2007) accepts the name P. nicaeensis subsp. gerundensis (O. Bolòs & Vigo) Á. M. Hern. for this subspecies; however, it is a later heterotypic synonym (see below).

Published as part of Manconi, Francesca & Peruzzi, Lorenzo, 2026, Nomenclature and typification of Polygala nicaeensis (Polygalaceae) and its infraspecific taxa, pp. 165-189 in PhytoKeys 270 on pages 165-189, DOI: 10.3897/phytokeys.270.174954