Bartonia

Bartonia is a genus of the gentian family, tribe Gentianeae, subtribe Swertiinae. Members of this genus are called screwstems. Bartonia was also the name of a genus in the Loasaceae family, but those species are now generally classified under the genus Mentzelia.

, Kew's Plants of the World Online accepts three species of Bartonia:
 * Bartonia paniculata (Michx.) Muhl.
 * Bartonia verna (Michx.) Raf. ex Barton
 * Bartonia virginica (L.) Britton, Sterns & Poggenb.