Caryophyllaceae are a family of plants. They have opposite undivided leaves without stipples, tumid articulations of the stems, and seeds disposed upon a free central placenta, surrounded by several carpellary leaves. The great proportion of the species are inconspicuous weeds, like chick-weed, sandwort, etc, but many are found as favourite plants in our gardens, as the carnation, sweet-william, etc. Research Caryophyllaceae