Tarbush

Shrubs to 100(–200) cm. Leaf blades elliptic to ovate, 10–25(–40+) × 4–15(–20) mm (margins sometimes undulate). Ray florets 0. Disc florets 10–25(–40); corollas 3–4 mm. Cypselae 4–6.5 mm; pappi 2.5–3.5 mm. 2n = 36.

Flowering mostly Sep–Nov. Limestone or alkaline or clay soils, gravelly sites, desert scrub; 800–2000+ m; Ariz., N.Mex., Tex.; Mexico.

Plants of Flourensia cernua usually have a tarry odor and are often locally co-dominant with Larrea tridentata throughout much of the Chihuahuan Desert.