Literature

• Axelrod, F.S. 2015. A Systematic Vademecum to the Vascular Plants of Sint Eustatius. 179 pp.
• Boldingh, I. 1909. The flora of the Dutch West Indian Islands St. Eustatius, Saba and St. Martin. 321 pp. E.j. Brill., Leiden.
• Boldingh, I. 1913. Flora voor de Nederlandsch West-Indische eilanden. 450. J.H. de Bussy, Amsterdam - Derde Uitgave van het Van Eedenfonds.
• Encyclopedia of Life. [link]
• Kramer, K.U. 1962. Pteridophyta. Flora of the Netherlands Antilles 1: 1-84.
• Moran, R. 2007. Ferns. Plants and Lichens of Saba Virtual Herbarium of The New York Botanical Garden. [link]
• 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)