@book{bhlpg7390217, title = {A flora of California }, volume = {v.2}, url = {https://www.biodiversitylibrary.org/page/7390217}, publisher = {Cunningham, Curtis & Welch}, author = {Jepson, Willis Linn, 1867 -1946}, year = {1909}, pages = {Page 39}, } @book{bhlpg23668921, title = {Synoptical flora of North America }, volume = {v.1 pt.1 (1895-1897)}, url = {https://www.biodiversitylibrary.org/page/23668921}, publisher = {American Book Company}, author = {Gray, Asa, 1810 -1888}, year = {1895}, pages = {Page 177}, }