Pteronia centauroides Dc.

Branches fairly slender, subterete, scabrid-papillous. Leaves opposite or subopposite, free from each other at the base, linear or linear-lanceolate, subacutely mucronate, 1-2 cm long, 1.5-4 mm broad, coriaceous, with a slightly prominent midrib on the lower surface, scabrid-papillous on both surfaces. Heads terminal, solitary, pedunculate, cylindric, 2.5-3 cm long, about 1.3 cm in diameter, about 25-flowered. Involucral bracts 6-7-seriate; the outer ovate, about 0.5 cm long; the intermediate oblong, 1.5 cm long, about 0.5 cm broad; the innermost linear, 2 cm long, about 4 mm broad; all rounded at the apex and with extremely narrowly membranous margins, scaly, glabrous. Receptacle quite flat, honeycombed, fimbril-late, about 6 mm in diameter. Corolla-tube 1.2 cm long, gradually widened upwards, glabrous; lobes linear-lanceolate, obtuse, 2.5 mm long, glabrous. Achenes 7 mm long, compressed, obovate-oblanceolate, villous with long silky appressed hairs. Pappus brownish-yellow when dry, 1.3 cm long.