BioStor
 | An Enumeration of the Plants of the Galapagos Archipelago; with Descriptions of those which are new Joseph Dalton Hooker (1847) Transactions of The Linnean Society of London 20: 163-233 |
 | Provisional List of the Plants of the Bahama Islands John Gardiner (1889) Proceedings of The Academy of Natural Sciences of Philadelphia 41: 349-407 |
 | A botanical survey of the Galapagos Islands Alban Stewart (1911) Proceedings of the California Academy of Sciences 1: 7-288 |
 | Studies in the flora of Lower California and adjacent islands Alice Eastwood (1929) Proceedings of the California Academy of Sciences 18: 393-484 |
 | Vegetation on bauxitic soils in Jamaica, II R A Howard and G R Proctor (1957) Journal of the Arnold Arboretum 38: 151-169 |
 | Vascular flora of Buenos Aires National Wildlife Refuge (including Arivaca Cienega), Pima County, Arizona S P Mclaughlin (1992) Phytologia 73: 353-377 |