Viridiplantae

Viridiplantae (literally "green plants") are a of  organisms made up of the, which are primarily aquatic, and the land plants (s), which emerged within them. Green algae traditionally excludes the land plants, rendering them a group. Since the realization that the embryophytes emerged from within the green algae, some authors are starting to include them. They have cells with in their cell walls, and primary chloroplasts derived from  with  that contain  and  and lack s. More than 350,000 species of Viridiplantae exist.

In some classification systems, the group has been treated as a, under various names, e.g. Viridiplantae, Chlorobionta, or simply ae, the latter expanding the traditional to include the. Adl et al., who produced a classification for all s in 2005, introduced the name Chloroplastida for this group, reflecting the group having primary s with green. They rejected the name Viridiplantae on the grounds that some of the species are not plants, as understood traditionally. The Viridiplantae are made up of two clades: and  as well as the basal  and. Together with and s, Viridiplantae are thought to belong to a larger clade called   or Primoplantae.

A taxonomic evaluation of s based on distribution showed the Viridiplantae lost class-I myosins.