ðə bˈɑːtɐnˌɪst bˈiː.dˈʌbəljˌuː. wˈɛlz, ɪn nˈætʃɚɹəl ɡˈɑːɹdənz ʌv nˈɔːɹθ kˌæɹəlˈaɪnə nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi tˈuː, kˈɔːld ðə plˈænts "lˈaʊdspiːkɚz", ɹᵻfˈɜːɹɪŋ tə ðə mˈɛɡəfˌoʊn ʃˈeɪp ʌvðɪ ˌɪndᵻvˈɪdʒuːəl flˈaʊɚz.
The botanist B.W. Wells, in Natural Gardens of North Carolina (1932), called the plants "loudspeakers", referring to the megaphone shape of the individual flowers.