Figure 27.5 The Closest Relatives of Land Plants (A) This species is a representative of the coleochaetophytes, the sister clade of stoneworts plus land plants. (B) The land plants probably evolved from a common ancestor shared with the stoneworts, an abundant group of multicellular green algae often found in freshwater pools and lakes (although a few species are found in marine environments). A species in the common genus Chara is shown here.