Pteronia ovalifolia Dc.

A slender shrub; branchlets opposite, scantily woolly-pubescent, becoming glabrous with age. Leaves opposite, often with buds in their axils, free from each other and broad at the base, ovate or oblong-ovate, obtuse, white woolly-tomentose. Heads 13-18-flowered, sessile, solitary, narrowly campanulate, 2-3 cm long, P8-2 cm in diameter. Receptacle flat, honeycombed, not fimbriated. Involucral bracts 5-6-seriate, closely imbricate, ovate, obtuse, woolly-tomentose in the upper part outside, with narrowly membrauous and slightly fimbriated margins. Corolla 1-8 cm long, tubular, gradually-widened above; lobes 4 mm long, lancolate-linear, subobtuse. Stamens inserted about half way down the tube; filaments 3.5 mm long, filiform; anthers 5.5 mm long, linear, lanceolate and acute at the apex. Style 1.7 cm long, terete; style-branches 4.5 mm long, papillose above. Achenes 3.5 mm long, oblong, villous. Pappus about 1-5 cm long, straw-coloured.