Literature

• Axelrod, F.S. 2015. A Systematic Vademecum to the Vascular Plants of Sint Eustatius. 179 pp.
• Encyclopedia of Life. [link]
• Kramer, K.U. 1962. Pteridophyta. Flora of the Netherlands Antilles 1: 1-84.
• Lellinger, D.B. 2002. Additions to the Fern Flora of Saba, Netherlands Antilles. American Fern Journal 92: 93-96.
• Moran, R. 2008. Ferns. Plants & Lichens of St. Eustatius The New York Botanical Garden. [link]
• Proctor, G.R. 1977. Pteridophyta. Flora of the Lesser Antilles, Leeward and Windward Islands In: Flora of the Lesser Antilles, Leeward and Windward Islands. 2: 414. Arnold Arboretum, Harvard University, Jamaica Plain, Massachusetts.
• Rojer, A. 1997. Biological inventory of Sint Eustatius. CARMABI Foundation, Curaçao.
• 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)