alga,
algae primitive chlorophyll-containing mainly aquatic eukaryotic organisms lacking true stems and roots and leaves
chlorophyta,
division chlorophyta large division of chiefly freshwater eukaryotic algae that possess chlorophyll a and b, store food as starch, and cellulose cell walls; classes Chlorophyceae, Ulvophyceae, and Charophyceae; obviously ancestral to land plants
stonewort any of various submerged aquatic algae of the genus Chara having nodes with whorled filamentlike branches; usually encrusted with calcium carbonate deposits
