THOMAS, Gregor, Uwe RAABE, & Joop Van RAAM 2012 (Nov. 28) Typification of Nitella gracilis (Sm.) C. Agardh var. confervacea Brébisson (= N. confervacea (Brébisson) A. Braun ex Leonhardi) with remarks on its nomenclatural history Cryptogamie, Algologie 33(4): 391-398, 1 fig., 1 table cardnote: |