Literature
- Axelrod, F.S. 2015. A Systematic Vademecum to the Vascular Plants of Sint Eustatius. 179 pp.
- The Plant List 2013. The Plant List version 1.1. [link]
Literature references linked to higher taxa
- Catalogue of Life. Species 2000 & ITIS. [link] (Polypodiopsida)
- Encyclopedia of Life. [link] (Thelypteridaceae)