Schoenocaulon is a North American genus of perennial herbaceous flowering plants, ranging from the southern United States to Peru.

[4] Feathershank is a common name,[5] the medicinally used S. officinale is called Sabadilla (pronunciation: /sab-uh-dil-uh/, IPA: /ˌsæb əˈdɪl ə/).

[6] Mexico is the center of Schoenocaulon diversity, with 22 endemic species - some with distributions limited to single mountain ranges.

[4] The two species with the widest distributions, S. yucatanense (sometimes treated as part of S. ghiesbreghtii) and S. officinale (sabadilla), may have been spread by pre-Columbians who used the seeds as pesticides.

[4] The petal and sepal color varies by species, with some shade of green being most common, but with maroon, cream, and bright red also represented.