Bahia dealbata A. Gray; B. absinthifolia var. dealbata (A. Gray) A. Gray

Perennials, 10–40 cm. Stems spreading to erect. Leaves all or mostly opposite (distal sometimes alternate); blades simple or 1–2-ternately lobed, lobes lanceolate to oblong, 10–25(–55+) × 2–5(–20+) mm, faces ± densely scabrello-canescent, usually gland-dotted as well. Involucres 5–7+ × 9–14+ mm. Ray florets 8–13+; corolla laminae 6–15+ mm. Disc florets 60–80(–120+); corollas 3–4 mm. Cypselae 3–4.5+ mm, faces hirtellous to ± strigose; pappi of ± spatulate to obovate, apically ± muticous scales 1–1.5 mm. 2n = 24, 48.

Flowering Mar–Nov. Sandy soils with mesquite or desert scrubs, calcareous places; 600–1700 m; Ariz., N.Mex., Tex.; Mexico.