Filaments are short, usually attached to larger algae; chloroplasts and other organelles not found; cell contents blue-green or paler; ex...
Cell contents green, with membrane bound orgenelles (e.g. chloroplasts, nucleus), cell tip often pointed.
![[Chamaesiphon], Tokomairiro River, X400. Photo: Otago Regional Council & Manaaki Whenua](/assets/Tools-And-Resources/Identification/algae/chamaesiphon400__FillMaxWzMwMCwyMDBd.jpg)
![[Characium], Welcome Creek, north Otago, X640. Photo: Otago Regional Council & Manaaki Whenua](/assets/Tools-And-Resources/Identification/algae/characium640__FillMaxWzMwMCwyMDBd.jpg)