References
For Didymoglossum
Dubuisson, J.-Y., S. Hennequin, E.J.P. Douzery, R.B. Cranfill, A.R. Smith, and K.M. Pryer. 2003. rbcL phylogeny of the fern genus Trichomanes (Hymenophyllaceae), with special reference to neotropical taxa. Int. J. Plant Sci. 164: 753-761. Google Scholar
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