Sphaeropteris lunulata is a species of tree fern in the family Cyatheaceae, native from Sulawesi in Malesia and the Bismarck Archipelago in Papuasia to the western Pacific.

[1][2] It was first described by Georg Forster in 1786 as Polypodium lunulatum and transferred to Sphaeropteris by Rolla Tryon in 1970.

[3] List of endemic plants in the Mariana Islands

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