A small, roundish flat disc of cells.
Extensive flat blade or sac, attached to surfaces by a holdfast.
Sheet fragments into ribbons, due to cells arranged in parallel rows.
![[Coleochaete], X200. Photo: Phil Novis, Manaaki Whenua](/assets/Tools-And-Resources/Identification/algae/coleochaete_phil200__FillMaxWzMwMCwyMDBd.jpg)
![[Monostroma], Taieri River estuary, X8. Photo: Otago Regional Council & Manaaki Whenua](/assets/Tools-And-Resources/Identification/algae/monostroma8__FillMaxWzMwMCwyMDBd.jpg)
![[Parallela], Heriot Burn, south Otago, X35. Photo: Otago Regional Council & Manaaki Whenua](/assets/Tools-And-Resources/Identification/algae/parallela35__FillMaxWzMwMCwyMDBd.jpg)