1.And that path is represented by a single branch coming off of the tree, meaning that bryophytes are monophyletic — they share a single common ancestor and are all more closely related to each other than to any other plant group.

这条路棵树上的个分支来表示，这意味着苔植物是单系的——它们有个共同的祖先，间的关系比与任何其他植物群体的关系都要密切。