Smith, A.R. 1971: Systematics of the neotropical species of Thelypteris section Cyclosorus. University of California Publications in Botany 59: 1–143.
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| Smith, A.R. 1971: Systematics of the neotropical species of Thelypteris section Cyclosorus. University of California Publications in Botany 59: 1–143. |