Laminarin is the stored food in
Chlamydomonas
Volvox
Polysiphonia
Dictyota
Brown algae store food as complex carbohydrates, which may be in the form of laminarin or mannitol. Dictyota is a brown alga.
Chlamydomonas and Volvox are green algae.
Polysiphonia is a red alga.