Acanthaceae of the Nueva Galicia Region of West-Central Mexico: Key to Genera, Species List with Distributions by State, and a New Species—Justicia wilburii

Field and herbarium studies were employed to determine the presence and distribution of Acanthaceae in the Nueva Galicia region of west-central Mexico. With 26 genera and 103 species of native and naturalized taxa, the region is revealed to be one of the richest in Mexico for the family. Twenty-two species of Acanthaceae are treated as endemic to the region, including the newly described Justicia wilburii. Ten new state distribution records are documented from Nueva Galicia regions of Nayarit (4), Michoacán (1), and Zacatecas (5).