Intersection plot showing shared and unique PFAMs in chlorophyte, rhodophyte, and ochrophyte micro- and macroalgae. Only nine PFAMs were exclusively conserved in chlorophyte, rhodophyte, and ochrophyte microalgae (listed); 222 PFAMs were exclusively conserved in the three macroalgal lineages. Rhodophyta macroalgae had the most unusual PFAMs (883) compared to the other groups.