$modus 0: smartphone
$modus 1: smartphone
Pilularia americana
Pilularia americana A. Braun [Accepted]
Marsileaceae
Pilularia americana A. Braun
D.S. Correll, H.B. Correll, Aquatic Wetl. Pl. SW U.S.: , fig. 7 a,b (1972) [vignet]