bᵻtwˌiːn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd fˈoːɹɾi fˈaɪv ænd wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd fˈoːɹɾi ˈeɪt, hiː tɹˈævəld ɛkstˈɛnsɪvli ɪn sˈɛntɹəl ɐmˈɛɹɪkə ænd ðə kˌæɹəbˈiən ænd pˈʌblɪʃt nˈuːmɚɹəs pˈeɪpɚz ɔnðə flˈoːɹə, kˈɑːnsəntɹˌeɪɾɪŋ ɔnðə plˈænt fˈæmɪliz ɐkˈænθeɪsˌiː ænd fˈæɡeɪsˌiː.
Between 1845 and 1848, he travelled extensively in Central America and the Caribbean and published numerous papers on the flora, concentrating on the plant families Acanthaceae and Fagaceae.