Crambe mitridatis Juzepczuk, 1951
Synonyms: Crambe koktebelica var. mitridatis Kotov, Crambe orientalis auct
Common names: Engl: Mithridates crambe, Mithridates colewort; Bulg: Divo zele (mitridatis); Rom: Holodean (mitridatis), Tirtan (mitridatis); Russ: Katran mitridatskiy; Ukr: Katran mitridats'ky
Family: BRASSICACEAE (CRUCIFERAE)
Taxonomic descriptions: It is a tall (1.5-2.0 m), annual or biennial plant with numerous thin branches. The base leaves are long, lyre-like, parted (solid ones are more rare), bare on the top , have long rare hairs on the veins on the bottom . The flowers are white, petals yellowing towards the base. The foetus is a nut-like podlet. Its base is short, empty; the top is a large sphere, one-seed. The close endemic species C. mitridatis was often described as a taxonomic variety of C. koktebelica because of their non-sufficient differences.
††† World level: NE
††† Black Sea Regional level: CR
††† Subregion level: CR
Habitats type, Critical habitats, Limiting factors: Sand and shingle coast, beaches, cavities and cracks in coastal rocks. Critical habitats: it was considered as a close endem of Opuk mountain (Kerch peninsula in the Crimea) for a long time; in recent years data shows it has spread to the north of Kerch peninsula (Zolotoye, Bagerovo) and on Tarkhankut peninsula (Jangulí coast). Limiting factors: endemism, small natural population size, phytophagans nutrition, elimination during storms.
Biology: The flowering and fruit-bearing are in June-September. Reproduction - by seeds; a low temperature is necessary for germination ability.
Population trends: The population is not numerous. Its trends are not quite clear.
Threats: Accidental extermination by local inhabitants because the plant is edible.
Conservation measures taken: The species is listed in the Red Data Book of Ukraine and conserved in reservation sites at Kazantip Cape and Opuk mountain (Kerch peninsula of the Crimea).
Conservation measures proposed: Population state monitoring; cultivation and reintroduction measures; creation of Kerch and Tarkhankut natural reservations including protected areas on Opuk mountain and Kazantip Cape.
Compiled by: L.Vakhrusheva