Centaurea aspera subsp. aspera L. Centaurea aspera subsp. euaspera Gugler in Ann. Hist.-Nat. Mus. Natl. Hung. 6: 213 (1907), nom. inval. Centaurea aspera var. genuina Willk. in Willk. & Lange, Prodr. Fl. Hispan. 2: 142 (1865), nom. inval. Centaurea aspera var. heterophylla Willd. ex Rouy in Bull. Soc. Bot. France 29: 113 (1882), nom. inval. Centaurea heterophylla Willd., Sp. Pl. 3: 2314 (1803), nom. illeg. Centaurea alophium DC., Prodr. 6: 601 (1838) Centaurea aspera f. albiflora Pau , in sched., nom. nud. Centaurea aspera f. macrocephala Sennen , in sched., nom. nud. Centaurea aspera f. michaelis Sennen , in sched., nom. nud. Centaurea aspera f. parcespinulosa Sennen, Diagn. Nouv. 128 (1936) Centaurea aspera var. auricularia DC., Prodr. 6: 600 (1838) Centaurea aspera var. canescens Sennen , in sched., nom. nud. Centaurea aspera var. fragiliformis Font Quer , in sched., nom. nud. Centaurea aspera var. microcephala Font Quer in Treb. Mus. Ci. Nat. Barcelona, Sr. Bot. 5: 229 (1920) Centaurea diversifolia Lag. ex Boiss., Voy. Bot. Espagne 2: 352 (1840), pro syn., nom. inval. Centaurea hayekii Sennen , in sched., pro hybrid., nom. nud. Calcitrapoides heterophylla Holub, Suppl. Meth. 230 (1802), nom. illeg. Centaurea heterophylla Moench, Suppl. Meth. 230 (1802), nom. illeg., non Willd. Centaurea isnardii L., Sp. Pl. 916 (1753) Centaurea lacaitae Pau , in sched., pro hybrid., nom. nud. Centaurea tarraconensis Sennen , in sched., pro hybrid., nom. nud. Alophium tenuifolium Cass. in F. Cuvier, Dict. Sci. Nat. ed. 2 54: 494 (1829)
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