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FamilyScientific Name Common NameHabitatDistributionImage
PolypodiaceaePolypodium appalachianumAppalachian Rockcap Fern, Appalachian Rock PolypodyMoist rocks at low to high elevations, especially in ravines, on north-facing outcrops, and in other moist sites, rarely epiphytic on tree trunks.NL (Newfoundland) west to e. ON, south to n. GA and n. AL; nearly restricted to the Appalachian Mountains.image of plant
PolypodiaceaePolypodium virginianumCommon Rockcap Fern, Common Rock PolypodyMoist rocks.Haufler and Windham (1991) indicate that the tetraploid cytotype (P. virginianum) of the P. virginianum complex is an allotetraploid derivative of the sterile hybrid of the diploid occurring in our area (P. appalachianum) and another diploid with a boreal distribution (P. sibiricum Siplivinsky)image of plant

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