References

 

 Dyer, A. 1979. The experimental biology of ferns. Academic Press Inc., New York, New York, USA.

ELZER 2000. <http://www.gardens.si.edu/horticulture/res_ed/fctsht/fern.html> Accessed 11 April 2010.

HAVEL 2000. <http://ucce.ucdavis.edu/datastore/detailreport.cfm?usernumber=18&surveynumber=275> Accessed 20 March 2010.

JOHNSON 2010. <http://www.wildflower.org/plants/result.php?id_plant=adpe> Accessed 3 April 2010.

 Moran, R. 2004. A natural history of ferns. Timber Press, Inc., Portland, Oregon, USA.

NOVAK 2008. <http://www.ct-botanical-society.org/ferns/adiantumpeda.html> Accessed 10 April 2010.

 PEACE 2006. <http://peacebella.blogspot.com/2006/04/facts-about-maidenhair-fern.html> Accessed 28 March 2010.

 Small, J.K. and R. George. 1938. Ferns of the southeastern states. Hafner Publishing Company, Inc., New York, New York, USA.

 Tryon, R.M. andA. Tyron. 1982. Ferns and allied plants. Springer- Verlag New York   Inc., New York, New York, USA.

USDA, NRCS. 2010. The PLANTS Database (http://plants.usda.gov, 21 April 2010). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

 Wherry, E. 1961. The fern guide. Doubleday & Company, Inc., Garden City, New York, USA.

 

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