References

For Vittaria

Farrar, D.R. 1993a. Vittariaceae. In Flora of North America Editorial Committee. 1993b. Flora of North America north of Mexico. Volume 2, pteridophytes and gymnosperms. Oxford Univ. Press, New York, NY. 475 pp. Google Scholar

Farrar, D.R., and J.T. Mickel. 1991. Vittaria appalachiana: a name for the "Appalachian Gametophyte." Amer. Fern J. 81: 69-75. Google Scholar

Kramer, K.U., and P.S. Green. 1990. Pteridophytes and Gymnosperms. In K. Kubitzki, ed., The families and genera of vascular plants. Springer-Verlag, Berlin. Google Scholar

Pinson, J.B., S.M. Chambers, and E.B. Sessa. 2017. Vittaria graminifolia (Pteridaceae) and Didymoglossum petersii (Hymenophyllaceae) in Broxton Rocks, GA. Amer. Fern. J. 107: 257-264. Google Scholar