@book{bhlpg31085506, title = {1997 IUCN red list of threatened plants }, volume = {1997}, url = {https://www.biodiversitylibrary.org/page/31085506}, publisher = {}, author = {}, year = {1997}, pages = {Page 147}, } @book{bhlpg38692550, title = {Preliminary draft list of plant species for inclusion in a 'Responsibility List' of European plants }, volume = {1989}, url = {https://www.biodiversitylibrary.org/page/38692550}, publisher = {WCMC}, author = {WCMC }, year = {1989}, pages = {Page 79}, }