Brachycereus nesioticus (Lava Cactus). Photo: Frank Bungartz, CDF, 2006.
Schofield, E.K. (1984) Plants of the Galapagos Islands. Field Guide and Travel Journal. Universe Books, New York, 159 pp.
McMullen, C.K. (1999) Flowering plants of the Galapagos. Cornell University Press, Ithaca and London, 370 pp.
Valencia, R. Pitman, N., León-Yánez, S. & Jørgensen, P.M. (2000) Libro Rojo de las Plantas Endémicas del Ecuador. Herbario QCA, Pontificia Universidad Católica del Ecuador. Ecuador 2000 i–iv, 1–489.
Royal Botanic Gardens, Kew Missouri Botanical Garden (eds.) (2013) The Plant List, Version 1.1. Published on the Internet; http://www.theplantlist.org/ (accessed 1st January).
Robinson, B.L. (1902) Flora of the Galapagos Islands. Papers from the Hopkins-Stanford Expedition to the Galapgaos Islands. Proc. Amer. Acad. 38(4): 78-270.
Stewart, A. (1911) A botanical survey of the Galápagos Islands. Proc. Calif. Acad. Sci. 4th Series, 1: 7-288.
Schönitzer, K. (1975) Galápagos Plants. Privately Published, Quito: 1-43.
Loope, L.L. Hamann, O. & Stone, C.P. (1987) Comparative conservation biology of oceanic archipelagoes Hawaii and the Galápagos. BioScience 38(4): 272-282.