Marchantia is a genus of liverworts belonging to the family Marchantiaceae and the order Marchantiales. These liverworts are non-vascular plants that thrive Thallus organization, morphology, anatomy and reproduction Thallus organization (External morphology): The thallus is deep green and provided with a midrib. […] Marchantia belongs to bryophytes which is a group of nonvascular plants. Learn about the Marchantia topic of NEET in detail explained by subject experts on vedantu.com. It is one of the most common liverworts found in moist, shady, cool areas with abundant moisture. It grows in large mats. Damp soil, streams, springs, wet rocks are the favorable places for its growth. There are about 65 species of Marchantia and are found all over the world.