Diffusely branched shrublet, up to 0.6 m high; branches glabrous, reddish, wiry. Leaves opposite, oblong-lanceolate, acuminate. Flowers in pairs at apex of branches, yellow. Hypanthium funnel-shaped, glabrous. Petaloid floral scales 4, membranous, pale. Flowering time Sept.-May.
Slender-branched shrublet to 60 cm. Leaves opposite, oblong-lanceolate; involucral leaves slightly wider. Flowers paired at branch tips, yellow; hypanthium funnel-shaped, glabrous, petaloid floral scales 4, membranous, pale.