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NZ Plants

Riccia fluitans

Family Ricciaceae

Riccia fluitans is a small floating plant that forms clusters of interlocking, branching stems. Stems are up to 6 cm long and 0.5-1.0 mm wide and are flattened in profile. If the pond dries up, stems thicken and form numerous rhizoids on the ventral surface. It becomes reproductive in this anchored phase. 

Widespread in New Zealand in streams and ponds. A cosmopolitan species throughout the world.