Triteleiopsis is a genus with only one species native from Baja California, Mexico to Yuma, Arizona. This genus is now considered to be another member in the new family, Themidaceae, which includes the California genera Androstephium, Bloomeria, Brodiaea, Dichelostemma, Muilla, and Triteleia, and is in the Brodiaea-Dichelostemma-Triteleiopsis clade within this family.
Triteleiopsis palmeri is native to deserts in Baja California and far southwestern Arizona. It has three to eight leaves which bear cormels in the axils. It has bluish to whitish flowers in a many-flowered umbel.