Flora of New Zealand Series

nardoo

Aquatic fern. Rhizomes submerged, long-creeping, rooting at nodes. Lvs solitary at each node, glabrous; stalks to 25 cm long, each terminating in 4 flabellate segments; each segment rounded on outer margin, to 2-3 × 2-3 cm, green, sometimes with a horizontal brown band in the cente. Sporocarps 3-5 mm long, hairy or becoming glabrous, solitary or in groups of 2-4, on branched stalks to 2 cm long.

N.: S. Auckland (Hunua), Wellington (Paraparaumu).

Australia, New Caledonia 1988

Farm ponds.

This is an Australian sp. commonly grown in aquaria and is known to have become established in farm ponds in at least 2 North Id localities (Plate 2). It is closely related to the European M. quadrifolia L.