Polypodium spectrum Kaulf. var. pentadactylum Hillebr. Endemic Greek pente, five, + daktylos, finger, in reference to the 5-lobed fronds.

Blades palmate and 5-lobed.

Found mostly on Kaua'i (some 5-lobed fronds are found in patches of var. spectrum at Nahiku, Maui).

Microsporum spectrum var. pentadactylum may be distinguished from var. spectrum by its generally 5-lobed blade.