The stems are reddish and contain a milky [[latex]] capable of causing skin blisters. The [[leaf|leaves]] are opposite, simple broad lanceolate, 7-15 cm long and 3-5 cm broad, entire, and smooth on top with white hairs on the underside. The [[flower]]s are produced in mid summer, with large sepals, and a five-lobed white corolla. | The stems are reddish and contain a milky [[latex]] capable of causing skin blisters. The [[leaf|leaves]] are opposite, simple broad lanceolate, 7-15 cm long and 3-5 cm broad, entire, and smooth on top with white hairs on the underside. The [[flower]]s are produced in mid summer, with large sepals, and a five-lobed white corolla. |