ɪt wʌz fˈɔːɹmɚli kənsˈɪdɚd kɑːnspɪsˈɪfɪk wɪð mɑːɹʃˈæliə pˈʌlkɹə bjˈuːɾifəl bˈɑːɹbɚɹəz bˈʌʔn̩z ɔːɹ mˌɑːnoʊŋɡɐhˈɛlə bˈɑːɹbɚɹəz bˈʌʔn̩z, wˌɪtʃ ɪz ɛndˈeɪndʒɚd ɪn kɛntˈʌki, pˌɛnsɪlvˈeɪniə, ænd tˌɛnəsˈiː, ænd hˈæzbiːn ˈɛkstɚpˌeɪɾᵻd ɪn mˈɛɹɪlˌænd.
It was formerly considered conspecific with Marshallia pulchra (Beautiful Barbara's buttons or Monongahela Barbara's buttons), which is endangered in Kentucky, Pennsylvania, and Tennessee, and has been extirpated in Maryland.