Leaf blades mostly 20-50+ × 15-40+ mm. Involucres 6-8 mm. Corollas ca. 6 mm. Cypselae ca. 2.5 mm; pappi ca. 4 mm. 2n = 20.

Flowering Feb-Jun(-Jul). Shrublands, often with acacias, palm groves, clay or clay-loam soils; 0-10 m; Tex.; Mexico.

King and Robinson hypothesized that Tamaulipa azurea is closely related to Conoclinium; B. L. Turner (1972) observed that it may be closer to Chromolaena.