Acrostichum danaeifolium Langsd. & Fisch.

Stems usually erect, infrequently branched. Leaves ascending or erect, 1.5--5 m × 15--60 cm. Rachis shallowly grooved abaxially, flat or shallowly grooved adaxially. Pinnae 20--32(--64), distant to closely spaced, usually overlapping, 7--37 × 1.5--5.5 cm, tapering toward apex, abruptly acute at tip; costal areoles less than 3 times longer than wide; most pinnae of fertile leaves bearing sporangia. Sporangia spread over abaxial surface of fertile pinnae; paraphyses stalked, ending with horizontally extended, smooth or little-lobed cell. Spores (44--)54(--72) µm diam., surface minutely roughened with small projecting papillae. 2 n = 60.

It is a tropical plant. In Argentina it grows from sea level and up to 100 m above sea level. It grows in brackish and freshwater marshes.

The young buds are eaten as a vegetable.