@book{bhlpg31085734, title = {1997 IUCN red list of threatened plants }, volume = {1997}, url = {https://www.biodiversitylibrary.org/page/31085734}, publisher = {}, author = {}, year = {1997}, pages = {Page 375}, } @book{bhlpg47828491, title = {Madroño; a West American journal of botany }, volume = {v.23:no.1-8 (1975:Jan.-1976:Oct.)}, url = {https://www.biodiversitylibrary.org/page/47828491}, publisher = {California Botanical Society}, author = {California Botanical Society. }, year = {1976}, pages = {Page 326}, } @book{bhlpg47828631, title = {Madroño; a West American journal of botany }, volume = {v.23:no.1-8 (1975:Jan.-1976:Oct.)}, url = {https://www.biodiversitylibrary.org/page/47828631}, publisher = {California Botanical Society}, author = {California Botanical Society. }, year = {1975}, pages = {Page 458}, }