Erect, spineless, `cats tail'-like shrublet, up to ± 0.8 m tall, roots with spindle-shaped tubers densely packed on rhizome or 10-120 mm from rhizome. Cladodes solitary, linear, closely overlapping, fringed at least near the tips. Flowers erect, solitary in axils, tepals cohering below, filaments perpendicular.