Pteronia onobromoides Dc.

A bush 1-3 ft. high; branches glabrous, with smooth light-coloured bark. Leaves alternate, linear or broadly linear, obtuse or subacute, truncate at the base, 2-4 cm long, 3-5 mm broad, flat or concave above, distinctly 1-nerved beneath, glabrous and wrinkled when dry, closely pectinate-setose on the margins with acute ivory-white teeth. Heads solitary, terminal, sessile, numerous-flowered, campanulate, 3.5 cm long, about 1.5-2.5 cm in diameter. Receptacle about 8 mm broad, slightly concave, honeycombed and fimbriate. Involucral bracts about 7-seriate; the outermost ovate, about 8 mm long, the others gradually becoming narrower; the innermost linear-oblong, obtuse or truncate at the apex, glabrous, chaffy-coriaceous. Corolla 2 cm long, with a slender ribbed tube, glabrous; lobes linear-lanceolate, acute, 3.5 mm long. Achenes compressed, oblanceolate, 7 mm long, covered with golden glands, not hairy. Pappus 1.5 cm long, brownish-yellow.