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Hillebrand's brake fern (Apparently no known Hawaiian name) [syn. Pteris cretica var. decurrens, Pteris irregularis var. linearis] Dennstaedtiaceae Endemic to the Hawaiian Islands Uncommon Oʻahu (Cultivated); Spores originally collected from the Waiʻanae Mts., Oʻahu  D. Palmer (2003) notes that this is a "probable pentaploid hybrid of Pteris cretica and P. irregularis." This species certainly has some of the most unusual foliar features of the native Hawaiian Pteris spp.   Pteris cretica is an indigenous species and known by the Hawaiian name ʻŌali. Pteris irregularis is an endemic species known by it's Hawaiian names as Māna, ʻĀhewa (on Oʻahu), or ʻIwa puakea (on Maui).  nativeplants.hawaii.edu/plant/view/Pteris_hillebrandii