Conringia clavata Boiss. in Ann. Sci. Nat., Bot. ser. 2, 17: 84. 1842.

 Sisymbrium perfoliatum C.A. Mey., Verz. Pfl. Casp. Meer.: 188. 1831.

Type: “[Meyer] 1645. In montibus Talüsch prope pagum Swant (alt. 670 hexap.)”.

Lectotypus (designated by DOROFEYEV, 2012: 376): AZERBAIJAN: “In campis siccis prope Swant”, 23. VI .1830, Meyer 1645 (LE; isolecto-: G-BOIS [G00789725]) .

Notes. – HEDGE (1965: 278, 1968: 61) treated C. clavata as a synonym of Sisymbrium perfoliatum C.A. Mey. and the illegitimate later combination Conringia perfoliata (C.A. Mey.) N. Busch (Fl. CCCP 8: 497. 1939), non C. perfoliata Link (Enum. Hort. Berol. Alt. 2: 172. 1822), which Hedge was apparently unaware of.

Indeed, BOISSIER (1842a) cited Sisymbrium perfoliatum in synonymy of Conringia clavata, and most likely he was aware of Link’s earlier homonym. Therefore, Boissier’s name is a new name based on Meyer’s type rather than on Aucher-Eloy 152 that he cited.