| Atropa procumbens Cav., 1791 |
| Basarthrum Bitter, 1912 |
| Bassovia Aubl., 1775 |
| Bassovia escuintlensis (J.M. Coult.) Standl., 1924 |
| Bassovia foliosa Brandegee, 1917 |
| Bassovia macrophylla J.M. Coult., 1891 |
| Bassovia mexicana B.L. Rob., 1891 |
| Bassovia purpusii Brandegee, 1917 |
| Bassovia stellata Greenm., 1905 |
| Bellinia Roem. & Schult., 1819 |
| Bellinia procumbens (Cav.) Roem. & Schult., 1819 |
| Bouchetia Dunal, 1852 |
| Bouchetia arniatera B.L. Rob., 1904 |
| Bouchetia erecta DC. ex Dunal, 1852 |
| Bouchetia procumbens DC. ex Dunal, 1852 |
| Brachistus Miers, 1849 |
| Brachistus affinis (C.V. Morton) D'Arcy, J.L. Gentry & Averett, 1981 |
| Brachistus ceratocalycius Donn. Sm., 1909 |
| Brachistus ciliatus (Kunth) Miers, 1849 |
| Brachistus dumetorum (Dunal) Miers, 1849 |