Syn.: Deilosma tristis (L.) Spach, Kladnia tristis (L.) Schur, Hesperidium triste (L.) Beck, Hesperis desertorum Velen.
Family: Brassicaceae Burnett
Hesperis tristis
Distribution: Southeastern part of Central Europe, eastward to the North Caucasus and the Volga Region, northward to the Pannonian part of southern Moravia.
Ecology: It grows on dry slopes, mainly on limestone, from lowlands to highlands. It blooms from May to June.
Hesperis tristis
Description: Biennial to perennial herb with an erect and hairy stem, 25–50(–70) cm tall. Leaves ovate-lanceolate to lanceolate, entire to denticulate; cauline leaves subcordate. Sepals 9–15 mm, petals linear-lanceolate, 20–25(–30) mm, yellow to purplish. Fruit is a siliqua, 40–180 × 2.5–4.5 mm.
Threat and protection: It is an endangered species in Czechia and Slovakia.
Hesperis tristis
Hesperis tristisHesperis tristis
Hesperis tristisHesperis tristis
Hesperis tristis
These images were taken in Czechia, Moravia, Pavlovské vrchy, Děvín (26. 4. 2003, 16. 5. 2004, 22. 4. 2009).