@book{bhlpg31185954, title = {List of rare, threatened and endemic plants in Europe (1982 edition) }, volume = {1983}, url = {https://www.biodiversitylibrary.org/page/31185954}, publisher = {}, author = {}, year = {1983}, pages = {Page 217}, } @book{bhlpg38692522, title = {Preliminary draft list of plant species for inclusion in a 'Responsibility List' of European plants }, volume = {1989}, url = {https://www.biodiversitylibrary.org/page/38692522}, publisher = {WCMC}, author = {WCMC }, year = {1989}, pages = {Page 51}, }