ðɪs sˈʌbdʒɛnəs ɪŋklˈuːdz ɐbˌaʊt sˈɪksti fˈaɪv spˈiːsiːz əkˈɜːɹɪŋ əkɹˌɑːs nˈɔːɹθ ɐmˈɛɹɪkə, ɪŋklˈuːdɪŋ ɐ fjˈuː spˈiːsiːz ɪn sˈɛntɹəl ɐmˈɛɹɪkə ænd ðə kˌæɹəbˈiən, wɪð wˈʌn spˈiːsiːz ˈɔːlsoʊ əkˈɜːɹɪŋ ɪn juːɹˈeɪʒə.
This subgenus includes about 65 species occurring across North America, including a few species in Central America and the Caribbean, with one species also occurring in Eurasia.