Phylogenetic Structural Equation Model R package phylosem version 1.1.4 Applies phylogenetic comparative methods (PCM) and phylogenetic trait imputation using structural equation models (SEM), extending methods from Thorson et al. (2023) <doi:10.1111/2041-210X.14076>. This implementation includes a minimal set of features, to allow users to easily read all of the documentation and source code. PCM using SEM includes phylogenetic linear models and structural equation models as nested submodels, but also allows imputation of missing values. Features and comparison with other packages are described in Thorson and van der Bijl (2023) <doi:10.1111/jeb.14234>. Software Depends: TMB, R (>= 4.0.0), Imports: sem, ape, phylobase, phylopath, methods LinkingTo: RcppEigen, TMB Suggests: semPlot, TreeTools, Rphylopars, phylolm, fishtree, phyr, knitr, rmarkdown, ggplot2, testthat, phylosignal, adephylo Enhances: phytools, DiagrammeR James Thorson <James.Thorson@noaa.gov> Comprehensive R Archive Network (CRAN) James Thorson [aut, cre] (ORCID: <https://orcid.org/0000-0001-7415-1010>), Wouter van der Bijl [ctb] (ORCID: <https://orcid.org/0000-0002-7366-1868>) GPL-3 2024-04-02 application/tgz https://CRAN.R-project.org/package=phylosem doi:10.32614/CRAN.package.phylosem