Figure 2: Maximum likelihood (ML) phylogenetic tree based on LTR retrotransposon chromodomain (CHD) aminoacid sequences including CHDs from newly identified chromodomain-containing LTR retrotransposons from Selaginella moellendorffii. Statistical support was evaluated by using aLTR; nodes with aLTR statistics over 50% are shown. The plant-specific clades Chlamyvir, Reina, CRM, Galadriel, and Tekay, as well as the Tcn1 clade, are indicated. The names of the host species and the accession numbers for the LTR elements are available in Supporting Information Figure . The taxonomic range of the host species is indicated by colored boxes and includes angiosperms, gymnosperms, green algae, and nonseed plants (Selaginella and Physcomitrella).