Shrubs, 50–150 cm. Stems erect, sparsely puberulent. Petioles 1–4 mm. Leaf blades deltate to deltate-lanceolate or ovate-lanceolate, 3–7 × 1–4 cm, margins serrate to dentate (abaxial faces reticulate-veiny with raised whitish, secondary veins, minutely gland-dotted). Heads usually in 3s, sometimes borne singly. Peduncles 0 or 2–8(–12) mm. Involucres turbinate to campanulate, 5–7 mm. Phyllaries in 4–5 series, apices of the inner appressed, acute (not petaloid or expanded). Corollas pale blue or white.

Phenology: Flowering Oct–Dec.
Habitat: Dry limestone hills in oak woodlands, talus
Elevation: 1000–1800 m

Distribution

• Generated Map
• Legacy Map

Tex., Mexico (Coahuila, Nuevo León, San Luis Potosí).

Discussion

Selected References

None.

Lower Taxa

None.