Silene campanula is a perennial native to dry, rocky grasslands of SW Europe. It bears white or pale pink flowers with an inflated, bell-shaped, purplish-veined calyx,.
Above information is sourced from Wikipedia
© paolapalazzolo (SOURCE)
© Bernard TILLY − Photoflora
© Liliane Roubaudi − Tela Botanica
© Frédéric Andrieu