Cranfillia geniculata, synonym Blechnum geniculatum, is a fern in the family Blechnaceae. The specific epithet refers to the geniculate (sharply bent) base of the sterile fronds. Description The plant is a terrestrial or lithophytic fern. The creeping rhizome has dense apical scales. Its fronds are 10–25 cm long and 7–15 cm wide. Distribution and habitat The fern is endemic to Australia's subtropical Lord Howe Island in the Tasman Sea. It grows on moist, shaded banks in cloud forest on the summits of Mounts Gower and Lidgbird, where it is rare. References Blechnaceae Endemic flora of Lord Howe Island Plants described in 1993 Ferns of Australia