137992 1233140 Marcetia gracillima C.F.P. von Martius, A.G. Eichler, I. Urban, Fl. Bras., vol. 14(3): fasicle 94, (Melastomaceae, tribus I - II ): t. 102 (1885)
 
353902 690340 Najas gracillima (A.Braun ex Engelm.) Magnus [80 690370 Najas indica var. gracillima A.Braun ex Engelm.] Trans. Linn. Soc. London, ser. 2, vol. 5 : t. 41 (1899) [A.B. Rendle]