You can tell at once by their swollen joints that the Campions are related to the Pink family. The prominent calyx is another tell-tale feature. The erect, leafy, light green stem is roughened with fine hairs and grows from two to three and a half feet high. The long, oval, yellow green leaf is tapered at the point. The surface is rough, and the margin is fringed with fine hairs. The leaves are arranged in whorls of four with occasional odd pairs near the top or base of the stalk. The light green, five-toothed calyx is sticky, inflated, and bell-shaped. The stem and calyx are stained with red. The beautiful, white, star-shaped flowers are prettily grouped in a large, open, terminal cluster. The five delicate petals are deeply fringed and clawed, and ten long stamens extend beyond the corolla. The Starry Campion is a conspicuous plant, unfolding its petals in the evening and closing them in the bright sun. It dwells commonly along woodland slopes from Massachusetts to Nebraska and southward to South Carolina and Arkansas during June, July and August. The generic name Silene is derived from the Greek seilanos, a mythical god, described as being covered with foam; connected with sialon, or saliva, referring to the stickiness of the calyx. The peculiar markings of the root, under the bark, suggest the skin of a snake, and it has been called Furman's Snakeroot in honour of an Indian doctor who first employed it as an antidote for snake bites. The calyx is a natural "tanglefoot," and small insects are frequently found stuck fast to its surface. This peculiarity prompted the English name, Catch-fly.