Silene urvillei Schott. (Caryophyllaceae) which is endemic to West Anatolia and Aegean Islands was investigated morphologically, anatomically, palynologically and cytologically. The plant is perennial and the leaves are spiny therefore it is different from other Silene L. species. Stem and leaves are covered with glandular hairs, the stem has multi-layered collenchyma. Petals are whitish, anthophore is hairy. Seeds are reniform, suture outlines of testa cells are lobed and sinuate. Pollens are tectate, spheroidal, microechinate and microperforate, 15-24 pores. Chromosome number was founded 2n= 24