About Centrostegia thurberi A.Gray ex Benth.
Centrostegia is a monotypic plant genus belonging to the Polygonaceae family. Its only accepted species is Centrostegia thurberi A.Gray ex Benth., which has two common names: Thurber's spineflower and red triangles. This species is a small herb that has noticeably distinct red coloration, and it is native to the southwestern United States and northwestern Mexico.