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Outline tree topologies showing aspects of conflict among phylogenies of basal land plants and some key events in life cycle evolution discussed. (a) Full bryophyte paraphyly to vascular plants. (b) Bryophyte monophyly. Key events discussed in text (arrows on left) occur in same sequence and equivalent points on both trees. *Two arrows on right of lower tree indicate key points argued in the Stebbins & Hill hypothesis of life cycle evolution [34].
