Does Erysimum hungaricum Zapal. (Brassicaceae) still grow in Romania?

: The Carpathian stenoendemic species Erysimum hungaricum Zapał. (Brassicaceae) had not been observed at its only known locality in the Maramureş Mts in Romania for more than 80 years. Research from June 2018 has confirmed its presence on the southern slope of Mt. Lostun Mic (1595 m). Compared to the past, the number of micro-locati o ns was reduced to a single one of approximately 200 m 2 . In the remaining population, approximately 100 flowering individuals, we made a phytocoenological relevé and determined the chemical properties of the soil (pH H2O = 6.46; pH KCl = 6.2; carbonate content = 8.0 g.kg -1 ; nitrogen content = 10.99 g.kg -1 ; phosphorus content = 19.57 mg.kg -1 ). In the plant community, succession occurs from the original Festucetum saxatilis Domin 1933 to a tall-herb vegetation of the order Adenostyletalia alliariae Br.-Bl. 1931 and a growth of Picea abies . The presence of the species in different vegetation units and the comparison of older and actual soil characteristics point to its wider tolerance of the characteristics of the site. Thus, the causes of the extraordinary rarity of the species are not yet clear. Based on the IUCN sozological evaluation, the species was categorised as Critically Endangered (CR) according to criteria B2ab(ii,iv).