Bartonia

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]

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