Chromophyta

The Chromista are a paraphyletic eukaryotic supergroup, which may be treated as a separate kingdom or included among the Protista. They include all algae whose chloroplasts contain chlorophylls a and c, as well as various colorless forms that are closely related to them. These are surrounded by four membranes, and are believed to have been acquired from some red alga. There are three different groups:Heterokonts or stramenopiles - brown algae, diatoms, water moulds, etc.HaptophytesCryptomonads
See more at Wikipedia.org...