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Cyathea ewanii Alston
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Jørgensen, P. M. & S. León-Yánez. (eds.) 1999. Catalogue of the Vascular Plants of Ecuador. Monogr. Syst. Bot. Missouri Bot. Gard. 75: i–viii, 1–1181.
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Tryon, R. M. 1986. 13. Cyatheaceae. In: Harling & L. Andersson (eds.). 27: 17–59. In G.W. Harling & B. Sparre (eds.) Fl. Ecuador. University of Göteborg & Swedish Museum of Natural History, Göteborg & Stockholm.
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