$modus 0: smartphone
$modus 1: smartphone
Ophioglossum engelmannii
Ophioglossum engelmannii Prantl [Accepted]
Ophioglossaceae
Ophioglossum engelmannii Prantl
D.S. Correll, H.B. Correll, Aquatic Wetl. Pl. SW U.S.: , fig. 4 e (1972) [unsigned]