BioStor
 | A botanical survey of the Galapagos Islands Alban Stewart (1911) Proceedings of the California Academy of Sciences 1: 7-288 |
 | The known geographic distribution of the members of t he Verbenaceae and Avicenniaceae. Supplement 6 H N Moldenke (1947) Phytologia 2: 325-348 |
 | The larger moths of the Galápagos Islands (Geometroidea: Sphingoidea & Noctuoidea) Alan H Hayes (1975) Proceedings of the California Academy of Sciences 40: 145-208 |