Literature

• Axelrod, F.S. 2015. A Systematic Vademecum to the Vascular Plants of Sint Eustatius. 179 pp.
• Boom, B.M. 2008. Flowering Plants. Plants & Lichens of St. Eustatius The New York Botanical Garden. [link]
• Bos, O.G., Bakker, P.A.J., Henkens, R., Debrot, A.O. & Freitas, J. de 2018. Preliminary checklist of extant endemic species and subspecies of the windward Saba and the Saba Bank. 65. Wageningen Marine Research Report no. C067.18.
• Krings, A., Axelrod, F.S. 2013. Gonolobus aloiensis (Apocynaceae, Asclepiadoideae), a new species from St. Eustatius. Systematic Botany 38: 1132-1137.
• The Plant List 2013. The Plant List version 1.1. [link]

Literature references linked to higher taxa

• Encyclopedia of Life. [link] (Apocynaceae)