Much-branched, flexuose shrub to 1 m tall. Leaves clustered at base, often absent from mature plants; petiole 1.7-7 cm long, 4-angled or semiterete; lamina spathulate, 6.5-24 cm long, 4-17 mm wide, glabrous; margins and midvein raised. Inflorescence a dichotomously branched panicle, terminating in heads of 3-7 flowers; axis 4-12-ribbed, ±pustulate; bracteoles 1.5-2.5 mm long, 2-3 mm wide, brownish blue, velutinous. Perianth white to pale blue, with white or rusty tomentum; tube 2-3.5 mm long; lobes 2-4 mm long, 0.5-1 mm wide. Nut urceolate, 2.5-3 mm long, 1.75-2.5 mm wide, puberulous, brown, red, or white.