Riccia is a genus of liverworts in the order Marchantiales.These plants are small and thalloid, that is not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm wide with dichotomous branches or may form rosettes or hemirosettes up to 3 cm in diameter, that may be gregarious and form intricate mats.The thallus is dorsiventrally differentiated.
The type genus of Marchantiaceae; liverworts that reproduce asexually by gemmae and have stalked antheridiophores.
type genus of Marchantiaceae; liverworts that reproduce asexually by gemmae and have stalked antheridiophores
Marchantia is a genus of liverworts in the family Marchantiaceae and the order Marchantiales. The thallus of Marchantia shows differentiation into two layers: an upper photosynthetic layer with a well-defined upper epidermis with pores and a lower storage layer.