Perennial, succulent; stems procumbent or decumbent, 25-45 mm long, cylindrically 4-or 5-angled, with ± 4 teeth along each angle. Flowers 1 or 2(-4). Sepals ovate-lanceolate, acuminate, glabrous. Corolla rotate and deeply lobed with tube absent, spreading; lobes ovate or lanceolate, margins revolute, glabrous on outer surface, velvety-puberous on inner surface. Corona yellow, arising from staminal column and incumbent on anthers, shortly excceding anthers, minutely toothed along dorsal margin, dorsally produced or expanded into a truncate-rounded crest. Staminal column arising from base of corolla. Flowering time Jan.-Mar. (June, Oct.).