Texas broomweed

Xanthocephalum amoenum Shinners, Field & Lab. 19: 77. 1951; Gutierrezia amoena (Shinners) Diggs, Lipscomb & O’Kennon

Plants 20–40(–60) cm. Primary stems usually (2 –)5 mm diam. Leaf blades linear, rarely linear-lanceolate, 5–25(–35) × 0.2–1(–2) mm. Heads in open paniculiform arrays. Phyllaries 3–4 × 1–2 mm. Receptacles with hooked, swollen-based hairs. Cypselae 2–3 mm, 4–6-ribbed, long-setulose. 2n = 8.

Flowering late Sep–Oct. Calcareous soils and gravels on or near limestone outcrops; 0–650 m; Tex.