Annual or perennial, hemiparasitic herb, up to 0.35 m high. Stems slender. Leaves ± basal; blade ovate, oblong or obovate, 70 x 15 mm, 3-veined. Flowers: in congested, terminal inflorescences; calyx glabrous except on margins; corolla tube glabrous or nearly so on outer surface, white; Sep.-Apr.
Slender, semiparasitic herb, up to 350 mm tall. Leaves oval, oblong or obovate. Calyx glabrous except margin. Corolla tube glabrous outside or nearly so. Flowers white.
Hemiparasitic perennial to 30 cm. Leaves mostly basal, shortly scabrid. Flowers crowded in dense spikes, purple or white, corolla ± glabrous.