| Bahiopsis chenopodina (Greene) E.E. Schill. & Panero, 2002 |
| Bahiopsis deltoidea (A. Gray) E.E. Schill. & Panero, 2002 |
| Bahiopsis laciniata (A. Gray) E.E. Schill. & Panero, 2002 |
| Bahiopsis lanata Kellogg, 1863 |
| Bahiopsis microphylla (Vasey & Rose) E.E. Schill. & Panero, 2002 |
| Bahiopsis parishii (Greene) E.E. Schill. & Panero, 2002 |
| Bahiopsis similis (Brandegee) E.E. Schill. & Panero, 2002 |
| Bahiopsis subincisa (Benth.) E.E. Schill. & Panero, 2002 |
| Bahiopsis tomentosa (A. Gray) E.E. Schill. & Panero, 2002 |
| Bahiopsis triangularis (M.E. Jones) E.E. Schill. & Panero, 2002 |
| Baileya Harv. & A. Gray ex Torr., 1848 |
| Baileya multiradiata Harv. & A. Gray ex Torr., 1848 |
| Baileya pauciradiata Harv. & A. Gray ex A. Gray, 1849 |
| Baileya pleniradiata Harv. & A. Gray ex A. Gray, 1849 |
| Baillieria Aubl., 1775 |
| Bajacalia Loockerman, B.L. Turner & R.K. Jansen, 2003 |
| Bajacalia crassifolia (S. Watson) Loockerman, B.L. Turner & R.K. Jansen, 2003 |
| Bajacalia moranii B.L. Turner, 2003 |
| Bajacalia tridentata (Benth.) Loockerman, B.L. Turner & R.K. Jansen, 2003 |
| Balsamorhiza Nutt., 1840 |