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Topic: Haplomitriales


In the News (Fri 1 Jan 10)

  
  Marchantiophyta - Wikipedia, the free encyclopedia
Another Devonian fossil called Protosalvinia also looks like a liverwort, but its relationship to other plants is still uncertain, so it may not belong to the Marchantiophyta.
The Jungermanniopsida includes primarily the two orders Metzgeriales (simple thalloids) and Jungermanniales (leafy liverworts), as well as a smaller order Haplomitriales.
The Marchantiopsida includes primarily the orders Marchantiales (complex-thallus liverworts) and Sphaerocarpales (bottle hepatics), as well as the problematic genus Monoclea, which is sometimes placed in its own order Monocleales.
en.wikipedia.org /wiki/Marchantiophyta   (1335 words)

  
 Systematics of the Hepaticophyta
Two of these subgroups (Haplomitriales & Monocleales) each contain only one genus with two species each.
In this new classification, the Haplomitriales are part of the Metzgeriidae.
However, we have singled Haplomitrium out for a box of its own in the cladogram above, partly because of its unique combination of physical features and its traditionally separate status, but also because it may be the sister group (nearest relative) of the leafy liverworts (Jungermanniidae).
www.ucmp.berkeley.edu /plants/hepatics/hepaticsy.html   (684 words)

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