Marchantia
Encyclopedia
Marchantia is a genus
in the family
Marchantiaceae
of the order
Marchantiales
, a group of liverworts.
These are simple plants without root
s or vascular systems. They were once considered related to moss
es and part of division Bryophyta
, but more recently have been assigned their own plant division, Marchantiophyta
.
Marchantia thallus shows differentiation into two layers: an upper photosynthetic or assimilatory region and a lower storage region with a well defined upper epidermis with air channels (barrel-shaped). It features tiny cup like structures called gemmae cups, which is used for asexual reproduction.
Multicellular purple colored scales and unicellular rhizoids are present on the ventral surface of the thallus. Antheridia and archegonia are present on special erect gametophores called antheridiophores and archegoniophores respectively born on separate thallai.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
in the family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
Marchantiaceae
Marchantiaceae
Marchantiaceae is a family of liverworts in order Marchantiales.- Genera in Marchantiaceae :Currently, four genera are included in the Marchantiaceae:* Bucegia* Marchantia* Neohodgsonia* Preissia...
of the order
Order (biology)
In scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...
Marchantiales
Marchantiales
Marchantiales is an order of thallose liverworts that includes species like Lunularia cruciata, a common and often troublesome weed in moist, temperate gardens and greenhouses....
, a group of liverworts.
These are simple plants without root
Root
In vascular plants, the root is the organ of a plant that typically lies below the surface of the soil. This is not always the case, however, since a root can also be aerial or aerating . Furthermore, a stem normally occurring below ground is not exceptional either...
s or vascular systems. They were once considered related to moss
Moss
Mosses are small, soft plants that are typically 1–10 cm tall, though some species are much larger. They commonly grow close together in clumps or mats in damp or shady locations. They do not have flowers or seeds, and their simple leaves cover the thin wiry stems...
es and part of division Bryophyta
Bryophyte
Bryophyte is a traditional name used to refer to all embryophytes that do not have true vascular tissue and are therefore called 'non-vascular plants'. Some bryophytes do have specialized tissues for the transport of water; however since these do not contain lignin, they are not considered to be...
, but more recently have been assigned their own plant division, Marchantiophyta
Marchantiophyta
The Marchantiophyta are a division of bryophyte plants commonly referred to as hepatics or liverworts. Like other bryophytes, they have a gametophyte-dominant life cycle, in which cells of the plant carry only a single set of genetic information....
.
Marchantia thallus shows differentiation into two layers: an upper photosynthetic or assimilatory region and a lower storage region with a well defined upper epidermis with air channels (barrel-shaped). It features tiny cup like structures called gemmae cups, which is used for asexual reproduction.
Multicellular purple colored scales and unicellular rhizoids are present on the ventral surface of the thallus. Antheridia and archegonia are present on special erect gametophores called antheridiophores and archegoniophores respectively born on separate thallai.
Species names of Marchantia
- Marchantia berteroana,
- Marchantia chenopoda
- Marchantia domingenis,
- Marchantia foliacia,
- Marchantia inflexa,
- Marchantia macropora,
- Marchantia paleacea,
- Marchantia polymorphaMarchantia polymorphaMarchantia polymorpha, sometimes known as the common liverwort or umbrella liverwort, is a large liverwort with a wide distribution around the world. It is variable in appearance and has several subspecies. It is dioecious, having separate male and female plants.-Description:It is a thallose...
(also as M. aquatica),