Secondary Endosymbioses, Volume 84, the latest release in the Advances in Botanical Research series, summarizes eight major groups possessing complex plastids, including heterokonts, dinoflagellates, apicomplexans, chromerids, haptophytes, cryptophytes, euglenophytes and chlorarachniophytes. Updates to this new volume include sections on the Evolution of secondary plastid-bearing organisms, Primary plastids of Archeaplastida, Secondary plastids of heterokonts (diatoms), Secondary and tertiary plastids of dinoflagellates, Apicoplasts, Secondary plastids of chromerids, Secondary Plastids of haptophytes, Secondary Plastids of cryptophytes, Secondary Plastids of euglenids, and Secondary Plastids of chlorarachinophytes. Through an examination on how plastids evolved by multiple endosymbiotic events, this book discusses how diverse and abundant organisms harbor complex plastids.