To cite package ‘phyext2’ in publications use:

  Stack JC (2015). _phyext2: An Extension (for Package 'SigTree') of
  Some of the Classes in Package 'phylobase'_. R package version 0.0.4,
  <https://CRAN.R-project.org/package=phyext2>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {phyext2: An Extension (for Package 'SigTree') of Some of the Classes in
Package 'phylobase'},
    author = {J. Conrad Stack},
    year = {2015},
    note = {R package version 0.0.4},
    url = {https://CRAN.R-project.org/package=phyext2},
  }

ATTENTION: This citation information has been auto-generated from the
package DESCRIPTION file and may need manual editing, see
‘help("citation")’.