Scientific name: Chara connivens Salzm. ex A. Braun, Flora 18: 73. 1835 Neotype (Wood, 1965: 177): Tanger/[no date]/Salzmann (PC 577722). = Chara arcuatifolia Vilh. in Spisy Prír. Fak. Karlovy Univ. 80: 23. 1928 “arcuatofolia” Lectotype: (Wood, 1965: 179): Czelkar, in fl. Kauldzhur/[no date]/N. Androssow 77 (LE). Local names: DANISH: Glat Kransnål; DUTCH: Gebogen kransblad; ENGLISH: Convergent stonewort; ESTONIAN: Sile mändvetikas; FINNISH: Suppunäk-inparta; GERMAN: Gebogene Armleuchteralge; LITHUANIAN: Glaustašakis maurabragis; POLISH: Ramienica zagi˛eta, RUSSIAN: Xapa cxodRwaRcR; SWEDISH: Tuvsträfse; UKRAINIAN: Xapa zbigaOqa.