Lygodium (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Lygodium" in Portuguese language version.

refsWebsite

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3,603^rd place

1^st place

helsinki.fi

Christenhusz et al. 2011. A linear sequence of extant families and genera of lycophytes and ferns. Phytotaxa 19: 7-54. (pdf)

Preface to “Linear sequence, classification, synonymy, and bibliography of vascular plants: Lycophytes, ferns, gymnosperms and angiosperms” pdf
Corrections to Phytotaxa 19: Linear sequence of lycophytes and ferns pdf

A. R. Smith, K. M. Pryer, E. Schuettpelz, P. Korall, H. Schneider, P. G. Wolf. 2006. "A classification for extant ferns". Taxon 55(3), 705-731 (pdf)