Plastid genomes of 217 species. (A) Genome length and the number of encoded proteins and structural RNA and coding area data, (B) and the variances of all these measures. Note how the variance of plastome size decreases as we move towards more complex plants. (The sunburst diagram is less 'dented'.)
(Figure related to the published article journals.plos.org/plosone/article?id=10.1371/journal.pone.0120527.)