Euro+Mednot endemicA: GermanycasualB; RomaniacultivatedC; Ukraine, with CrimeaintroducedD
Bibliography
A.2003: Personal Communication (B.Valdés)
B.Buttler, K. P., Thieme, M. & Mitarbeiter 2016: Florenliste von Deutschland - Gefäßpflanzen. Version 8 (August 2016) - http://www.kp-buttler.de/florenliste/index.htm
C.Ciocârlan, V. 2009: Flora Ilustrată a României: Pteridophyta et Spermatophyta. – Bucureşti
D.Mosyakin, S. L. & Fedoronchuk, M. M. 1999: Vascular plants of Ukraine. A nomenclatural checklist. – Kiev: M. G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine