EnvThes
algae
deprecated concept
US LTER controlled vocabulary
[Henderson's] n.plu. general name for a heterogene­ous group of unicellular, colonial and multicellular eukaryotic photosynthetic organisms of simple structure. Tradition­ally included in the plant kingdom, the different groups of algae are now often classiﬁed as divisions of the kingdom Protoctista (Protista). They are aquatic or live in damp habitats on land and include unicellular organisms such as Chlamydomonas and diatoms, colonial forms such as Volvox, the multicellular green, red and brown seaweeds, and