Abstract
Complete sequences for the 18S-rRNA gene of 22 bryophytes (12 completely new) were determined and used to construct phylogenetic trees. The evaluation of sequence data according to the maximum parsimony principle (PAUP 3.1.1) and the neighbor-joining method (MEGA) results in similar phylogenetic trees in which theBryopsida appear as a sister group to theJungermanniopsida, and both together as a sister group to theMarchantiopsida. Among theMarchantiopsida, theSphaerocarpales diverge early as a separate clade. TheMetzgeriales andJungermanniales are monophyletic. They belong to one clade and cannot be separated by either method of evaluation.
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