Bartonia is a genus of the gentian family, tribe Gentianeae, subtribe Swertiinae.

[citation needed] 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.

As of August 2020[update], Kew's Plants of the World Online accepts three species of Bartonia:[1]

This Gentianales-related article is a stub.