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Freshwater algae identification guide
Filamentous
Filaments macroscopic
Individual filaments are macroscopic and easily discerned with the naked eye; could be confused with pond weed or fine grass.
Structured as a main axis with whorls of branches at nodes
Ulva (ex Enteromorpha)
(Ulvaceae)
Filaments are hollow branching tubes of cells.
Factsheet
![[Chara] with oval oogonium, X6. Photo: Phil Novis, Manaaki Whenua](/assets/Tools-And-Resources/Identification/algae/chara_phil6__FillMaxWzMwMCwyMDBd.jpg)
![[Ulva], Waipori estuary, Otago, X320. Photo: Otago Regional Council & Manaaki Whenua](/assets/Tools-And-Resources/Identification/algae/ulva320__FillMaxWzMwMCwyMDBd.jpg)