Wieffering, J.H. 1964: A preliminary revision of the Indo-Pacific species of Ophioglossum (Ophioglossaceae). Blumea 12: 321–337.
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| Wieffering, J.H. 1964: A preliminary revision of the Indo-Pacific species of Ophioglossum (Ophioglossaceae). Blumea 12: 321–337. |