Pink family (Caryophyllaceae)
Perennial with long, thin stolons below ground. Stem cylindrical, of length 30-50cm, sparsely hairy, and also brittle. Leaves opposite, of length 2.5-8 cm, ovate-cordate, towards the apex acuminate, and ciliate. Lower leaves long-stalked, upper sessile. Flowers of diameter 15-20 mm, 5-petalled, combined together in an inflorescence of the 2-branched cyme type. Petals of corona white, cleft almost to base, and – at 5-7 mm in length, twice as long as segments of calyx. Flowers Jun.-Jul.
Grows on moist fertile or semi-fertile soils: present in most riparian forests and more humid forms of oak-lime-hornbeam forest.
Descriptions devised by the team at the Independent Department of Forest Botany, Warsaw University of Life Sciences, i.e. L. Witkowska-Żuk, K. Marciszewska, W. Ciurzycki, A. Obidziński and P. Zaniewski