Bulgarian endemic Carex riloensis, a synonym of Carex tricolor (Cyperaceae): morphological and genetic evidence. - Więcław, Helena; Cembrowska-Lech, Danuta; Kalinka, Anna; Denchev, Teodor T; Denchev, Cvetomir M; Koopman, Jacob (Botanical Journal of the Linnean Society, 2025)