The classification of the Hepaticae

@article{Evans2008TheCO,
  title={The classification of the Hepaticae},
  author={Alexander W. Evans},
  journal={The Botanical Review},
  year={2008},
  volume={5},
  pages={49-96}
}
Students of the Hepaticae have long been interested in the evolution of the group and have made repeated attempts to arrange the families and genera in one or more phylogenetic sequences. The earlier writers in this field assumed that the primitive Hepaticae must have been simply organized plants, not only with respect to their external configuration but also with respect to their histological structure. From plants of this character, they assumed, more advanced types arose by progressive… 

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References

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TLDR
It is apparently in accord that it is only in the Anthocerotales that the sporophyte has achieved some degree of autotrophism by photosynthesis; there are, however, occasional reports in the literature which contradict this conclusion.

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