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Lindsay, S. (Arnold Arboretum & Harvard University Herbaria, 22 Divinity Avenue, Cambridge, MA 02138, USA) 2003. Considerations for a revision of the fern family Vittariaceae for Flora Malesiana. Telopea 10(1): 99–112. The Vittariaceae is a family of mostly tropical epiphytic or lithophytic fern species. The family is particularly well represented in Malesia but the number of species present and the genera in which they should be recognised is currently uncertain. This paper explains why. Three factors are discussed: the impact of new molecular data on the traditional concepts of genera in the Vittariaceae; the uncertain taxonomic position of the monotypic (and Malesian endemic) genus Rheopteris; and the possibility that unrecorded species, including undescribed ones, exist within the region only as gametophytes.