Regularity: Regularly occurring
Global Range: Vittaria appalachiana occurs primarily in the Appalachian Mountains in unglaciated terrain, from southern New York southeast to northern Alabama. It occurs in Alabama, Georgia, Indiana, Kentucky, New York, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, Virginia, and West Virginia (Farrar 1993).
Comments: Vittaria appalachiana occurs in dark, moist cavities and rock shelters in noncalcareous rocks (often sandstones). It may also occur on the bases of trees in narrow ravines (Farrar 1993).
Number of Occurrences
Note: For many non-migratory species, occurrences are roughly equivalent to populations.
Estimated Number of Occurrences: 21 - 80
Comments: The canyon systems favorable to this species are fairly common in the Appalachian Mountains.
Molecular Biology and Genetics
Barcode data: Vittaria appalachiana
Statistics of barcoding coverage: Vittaria appalachiana
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
National NatureServe Conservation Status
Rounded National Status Rank: N4 - Apparently Secure
NatureServe Conservation Status
Rounded Global Status Rank: G4 - Apparently Secure
Reasons: Vittaria appalachiana is abundant within its range. Much of its rock-shelter habitat is currently protected. This species is extremely vulnerable, however, to any changes in its specialized habitat.
Global Short Term Trend: Relatively stable (=10% change)
Comments: The primary threat to Vittaria appalachiana is logging above the rock shelters in which it occurs. Deforestation opens the canyons and causes them to dry out, which in turn destroys the moist, climate-controlled habitat. Because many habitats for this species are on protected lands, V. appalachiana is not currently threatened.
Biological Research Needs: Study the population genetics of Vittaria appalachiana to determine the level of genetic variability within and between colonies in individual rock shelters and in entire canyon systems.
A distinctive morphologic characteristic of Vittaria appalachiana is the variability displayed in gemma production, often including forms intermediate between gemmae and their supporting gemmifer cells and abortive "gemmae" arrested in early stages of development. This is in contrast to the remarkably regular pattern of gemma production in other species (D. R. Farrar 1978; E. S. Sheffield and D. R. Farrar 1988).
Names and Taxonomy
Comments: Previously Vittaria sp 1 in TNC central databases.
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