GENESIS. “These and other criteria support the generally held view that each algal lineage traces its ancestry back to a unicellular ancestral organism, that colonial and multi-cellular life forms have evolved independently many times, that the land plants (embryophytes) and the charophycean algae share a last common ancestor, and that the embryophytes are a monophyletic group.”
http://aob.oxfordjournals.org/content/85/4/411.full.pdf