Lasiosiphon rubescens (B.Peterson) J.C.Manning & Magee

Shrub or subshrub up to 6 dm high with erect, slender branches from a woody rootstock. Unbranched or sparingly branched. Stems quite glabrous, usually terminated by an inflorescence. Leaves sparse above, densely clustered towards the base, alternate, entire, narrowly oblanceolate, acute, glabrous, (9-)12-18(-23) mm long, 1.5-4 mm broad, shortly petiolated (1 mm). Inflorescence globose, 12-18 mm in diameter, ca. 20-40 flowers, peduncle glabrous, 2-14 cm long. Involucral bracts (6-)8(-9), herbaceous green, ovate, acute(-acuminate), 5-8 mm long, 2-4 mm broad, glabrous or with a few scattered hairs on the lower side, occasionally sparsely ciliated. Flowers (4-)5-merous, at first yellow later rubescent, pedicel hairy. 1 mm long. Calyx tube funnel-shaped, (7-)8-10(-12) mm long, circumscissile above the ovary, lower part with 3-4 mm long hairs, upper part with ±1 mm long hairs. Calyx-lobes broadly obovate-suborbicular, obtuse, glabrous above, sericeous below, 1-2 mm long, 1-2 mm broad. Petals 0. Stamens 10 in 2 whorls, the upper shortly exserted: anthers subsessile, 0.75 mm long. Ovary sparsely hairy at apex, style 2-3 mm long, stigma club-shaped. Seed glabrous, 3 mm long.