 Second, consider the outermost regions to the left and right of  Figure 5,  regions 4 and 5. There are both some parts and some groups of organisms that are neither organisms nor Darwinian individuals nor living agents. Most parts of the cellular machinery possessed by organisms, such as lysosomes (region 4) or ribosomes, are biological individuals that, like genes, are not living agents, but unlike them, are not Darwinian individuals. Groups with this same status include higher taxa, such as species and clades discussed in  section 4.  Clades (region 5) are neither organisms nor living agents. And even the most optimistic of clade selectionists will probably agree that a relatively inclusive and diverse taxon such Bryophyta, consisting of about 10,000 moss species, is not itself a Darwinian individual. Yet if the common assumption that monophyletic clades are a type of biological individual is accepted, Bryophyta will nonetheless count as a biological individual (De Luna, Newton, &amp; Mishler 2003  Other Internet Resources).  Bryophyta thus belongs in the far right of  Figure 5.