Rarity, first described in 1865 by the Swiss botanist Johannes Müller Argoviensis; the only caudex plant from the Phyllanthus family; the leaves fold up in pairs like butterfly wings overnight or in dry conditions; also suitable for semi-shady locations; the temperature must not drop below 12°C; always keep moist during the growing season; as soon as the leaves have fallen, stop watering and only start again when new leaves sprout from the caudex (i.e. again in spring). ...); collector's plant; potted in a well-drained organic substrate; repotting only desirable in 2-3 years.