Protist / Protista / Protoctista is invalid due to paraphyly. All recent classifications place Chlorophyta within the Plantae (or Viridiplantae). See for example Baldauf, S. L. (2003), "The deep roots of eukaryotes", Science, 300: 1703-1706, Keeling, P. J. (2005), "The tree of eukaryotes", Trends in Ecology and Evolution, 20: 670-676, algaebase, NCBI.