Genome sizes and proportions of the various types of sequence in the mitochondrial genomes of Chara vulgaris and seven land plants1.

1Intron-encoded genes such as matR in vascular plants were excluded from calculation of genes and exons.

1. 维管植物中的matR等内含子编码基因（intron-encoded genes）未被纳入基因与外显子的统计计算范畴。