Ptilostemon Cass. in Bull. Sci. Soc. Philom. Paris 1816: 200 (1816) Cirsium sect. Chamaepeuce Fiori in Fiori & Paol., Fl. Italia 3: 362 (1904), nom. illeg. Chamaepeuce sect. Ptilostemon (Cass.) DC., Prodr. 6: 657 (1838), nom. illeg. Cirsium sect. Ptilostemon (Cass.) O. Hoffm. in Engl. & Prantl, Nat. Pflanzenfam. 4-5: 323 (1893) Carduus subgen. Chamaepeuce Baill., Hist. Pl. 8: 7 (1886), nom. illeg. Staehelina subgen. Chamaepeuce Raf., Fl. Tellur. 4: 118 (1838), nom. illeg. Chamaepeuce DC., Prodr. 6: 657 (1838), nom. illeg. Cnicus sect. Lamyra (Cass.) Benth. & Hook. fil., Gen. Pl. 2: 469 (1873) Chamaepeuce sect. Lamyra (Cass.) DC., Prodr. 6: 658 (1838) Ptilostemon subgen. Lamyra (Cass.) Greuter in Boissiera 22: 149 (1973) Cirsium subgen. Lamyra Cass. in Bull. Soc. Philom. Paris 1818: 168 (1818) Lamyra (Cass.) Cass. in F. Cuvier, Dict. Sci. Nat. ed. 2 25: 218, 222 (1822)
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