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Genus :


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Species of this Genus


Shrubs or subshrubs, unarmed, glabrous or hairy. Leaves opposite or whorled, entire or more or less crenate. Flowers sessile, in subterminal spikes, yellow or red, showy. Bracts 4-ranked, large, ovate-lanceolate, bracteoles linear-lanceolate. shorter than the calyx. Calyx and corolla deeply 5-lobed, lobes subequal. Stamens 4, didynamous, all fertile, included in the tube, anther 1-celled. Ovary 4-ovuled. Capsules oblong, 4-seeded, flattened, more or less quadrangular. Seeds ellipsoid-ovate, with fringed scales or hairs.