wˈɛlz hˈɛdᵻd ðə bˈɑːtəni dᵻpˈɑːɹtmənt fɹʌm nˈaɪntiːnhˈʌndɹɪd nˈaɪntiːn tə nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi nˈaɪn ænd kəntˈɪnjuːd tˈiːtʃɪŋ ʌntˈɪl hɪz ɹᵻtˈaɪɚmənt ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪfti fˈoːɹ.
Wells headed the Botany Department from 1919 to 1949 and continued teaching until his retirement in 1954.