Terrestrial, caulescent, erect or decumbent, small herbs, without modified stems. Stems unbranched. Leaves opposite, equal or subequal in a pair, venation pinnate, foliar nectaries absent. Flowers axillary, many in cymose inflorescences, long pedunculate, bracteoles leaf-like, pedicellate. Calyx lobes free; corolla white, campanulate; stamens included, filaments not connate or basally connate, anthers free, dehiscing by longitudinal slits, thecae parallel; staminode present but minute; disc of 2 opposite glands; ovary superior, stigma capitate. Fruit a fleshy, becoming dry, (color unknown) capsule, loculicidally dehiscent, 2-valved, valves opening slightly.