 |
Hepatophyta-Metzgeriales -1 |  |
These are very similar to plants in the Marchantiales. They are generally less complex in their vegetative anatomy than Marchantia and its immediate relatives. |
|
They are not very diverse as there are approximately 20 genera and 500 species.Habitat = Very Wet Their Growth Form is
simple & Thallose. |
 Branches may also emerge from the Midrib. This is sometimes irregular in appearance. |
| Key Anatomical Features | |
| Lack Air Chambers |  This thallus of Monoclea resembles a Green Alga (Chlorophyta)
|
| Lack Scales | |
| Gametangia = Sessile | |
| The Seta elevates the Capsule above the Thallus | |
| The Pelliaceae & Pallaviciniaceae are the two most important families in this Order | |
| An Apical Cell constitutes the Apical Meristem. |
|
| Dichotomous Branching can occur at the Apex. | |
| The Ventral Mid Rib can also produce Branches | |
| Thallus | |
| The
Thallus is Smooth & Translucent. Unlike Marchantia there is Little Tissue Differentiation. All Cells are Chlorophyllous and they
superficially resemble Chorophytes. A Thickened "Midrib" is present. The Midrib contains Xylem-Like Tissue! |
|
