Bibiography:  Reference Listing
for the Ophioglossaceae

Clausen, R. T. 1938. A monograph of the Ophioglossaceae. Memoirs of the Torrey Botanical Club 19(2):1-177.

Holmes, W.C., T.L. Morgan, J.R. Stevens, and R.D. Gooch. 1996. Comments on the distribution of Botrychium lunarioides (Ophioglossaceae) in Texas Phytologia 80:280-283.

Thomas, R. D. 1979. First record of Botrychium lunarioides and Ophioglossum nudicaule var. tenerum (Ophioglossaceae) from Texas. Southwestern Naturalist 24:271-396.

Thomas, R. D., L. R. Briley, and N. Carroll. 1981. Additional collections of Botrychium lunarioides from Texas and Oklahoma and comments on its dormancy. Phytologia 48:276-278.

Thomas, R.D. 1972. Botrychium lunarioides, Ophioglossum crotalophoroides, and Ophioglossum engelmanni in a Louisiana cemetery SouthW. Naturalist 16:431-459.

Wagner, W.H., Jr. and F.S. Wagner. 1993. Ophioglossaceae. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 2:85-106 Oxford Univ. Press, New York and Oxford.

Zech, J. C., P. R. Manning, and W. H. Wagner, Jr. 1998. A new adder's-tongue (Ophioglossaceae) for North America. Sida 18(1): 307-313.