@book{bhlpg31085878, title = {1997 IUCN red list of threatened plants }, volume = {1997}, url = {https://www.biodiversitylibrary.org/page/31085878}, publisher = {}, author = {}, year = {1997}, pages = {Page 519}, } @book{bhlpg31558245, title = {The World List of Threatened Trees }, volume = {1998}, url = {https://www.biodiversitylibrary.org/page/31558245}, publisher = {}, author = {}, year = {1998}, pages = {Page 619}, }