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The phylogenetic tree obtained by 79 PCGs among 208 Saxifragales plastomes, with BS and PP values shown by color circles. White boxes indicate the specific indels for deep-level nodes. Lined boxes indicate the specific indels for lower-level nodes. As those clades with too many specific indels were limited in branch lengths, we marked as many indels as possible, and the total number was noted under the corresponding clade.
