Literature

• Proosdij, A.S.J. van 2012. Arnoldo's Zakflora: Wat in het wild groeit en bloeit op Aruba, Bonaire en Curaçao. 318 pp. Walburg Pers, Zutphen.
• The Plant List 2013. The Plant List version 1.1. [link]

Literature references linked to higher taxa

• Encyclopedia of Life. [link] (Verbenaceae)