Desert leatherweed Desert leatherweed

Croton corymbulosus Engelmann var. thermophilus M. C. Johnston, SouthW. Naturalist 3: 187. 1959; C. thermophilus (M. C. Johnston) B. L. Turner

Stems somewhat zigzag; erect radii of stellate hairs longer than lateral radii, thus pubescence appearing ± shaggy. Leaf blades usually 1–1.4 cm. Racemes mostly 0.5–0.9 cm. Styles usually 0.5–1 mm. Capsules 4 mm.

Flowering Jul–Oct. Basalt and limestone hills; of conservation concern; 700–1800 m; Tex.; Mexico (Coahuila).

Variety thermophilus is restricted to Brewster County and nearby Mexico.