Phylogenetic analysis of FH2 and Sec10 domains. ML phylogenies of bryophyte amino acid sequences homologous to either a class I formin FH2 domain (A) or a SEC10 domain (B). Thickened lines indicate strong ML bootstrap support (≥85%). Black circles indicate most likely gene duplication events. Stars next to gene names indicate a For1F FH2 domain and a SEC10 domain on the same transcript assembly. Squares indicate species with SEC10 transcript assemblies with truncated For1F domains, and either separate or absent FH2 domain assemblies.