W. H. Harvey (1811–1866) and Lamouroux (1813) were the first to divide macroscopic algae into four divisions based on their pigmentation.
dˈʌbəljˌuː. ˈeɪtʃ. hˈɑːɹvi wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd ɪlˈɛvən wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti sˈɪks ænd lˈæmɚɹˌuː wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd θˈɜːtiːn wɜː ðə fˈɜːst tə dᵻvˈaɪd mˌækɹəskˈɑːpɪk ˈælɡiː ˌɪntʊ fˈoːɹ dᵻvˈɪʒənz bˈeɪst ˌɔn ðɛɹ pˌɪɡməntˈeɪʃən.