Texas rabbitbrush

Chrysothamnus nauseosus (Pallas ex Pursh) Britton subsp. texensis L. C. Anderson, SouthW. Naturalist 25: 197, figs. 1, 2. 1980

Plants 20–40(–50) cm. Stems whitish, leafy, loosely tomentose. Leaves grayish green; blades 1-nerved, linear, 10–35 × 1(–1.5) mm, faces loosely tomentulose. Involucres 8–11.5 mm. Phyllaries 16–23 (outer margins ciliate), apices erect, acute to obtuse (outer) to acuminate (inner), outer abaxial faces tomentose, glabrescent. Corollas 8.4–10.9 mm, tubes glabrous or sparsely puberulent, lobes 0.6–1.3 mm, glabrous; style appendages shorter than stigmatic portions. Cypselae glabrous; pappi 5.2–7.4 mm. 2n = 18.

Flowering fall. Limestone cliffs and among boulders, less common on gravel alluvium of streambeds, associated with bigtooth maple, hornbeam, madrone, and yellow pine woodlands; of conservation concern; 1500–2100 m; N.Mex., Tex.

Variety texensis is known from the Guadalupe Mountains.