$modus 0: smartphone
$modus 1: smartphone
Wolffiella oblonga
Wolffiella oblonga (Phil.) Hegelm. [Accepted]
Lemnaceae
58 1075319 Wolffiella oblonga (Phil.) Hegelm. [107 591882 Lemna oblonga Phil.]
C.F.P. von Martius, A.G. Eichler, I. Urban, Fl. Bras., vol. 3(2): fasicle 76, (Lemnaceae; Araceae; Cyclanthaceae, Palmae): t. 1 (1878) [n.a.]
591882
Wolffiella oblonga (Phil.) Hegelm.
Annual Rep. Missouri Bot. Gard., vol. 9 : t. 4, fig. B (1898)