9; see text Styphnolobium is a genus of flowering plants in the pea family, Fabaceae.

It includes nine species of small trees and shrubs native to China and to the Americas, from the southern United States to Colombia.

[2][3][4] They differ from the genus Calia (mescalbeans) in having deciduous leaves and flowers in axillary, not terminal, racemes.

The leaves are pinnate, with 9–21 leaflets, and the flowers in pendulous racemes similar to those of the black locust.

The Guilty Chinese Scholartree was a historic pagoda tree in Beijing, on which the last emperor of the Ming Dynasty, Chongzhen, hanged himself.