Annual, semi-parasitic herbs. Lvs opposite or sometimes the upper alternate, sessile, dentate or serrate. Infl. a terminal, spike-like raceme. Bracts similar to lvs. Calyx tubular or tubular-campanulate, 4-toothed, ± regular and not 2-lipped. Corolla tube cylindric; limb 2-lipped; upper lip entire or emarginate, forming a hood; lower lip longer, with 3 entire lobes. Stamens 4, included in upper lip; anthers mucronate or aristate at base. Capsule oblong, loculicidal. Seed numerous, smooth or reticulate, very small; wing 0.
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