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The Marchantiophyta (/ mɑːrˌkæntiˈɒfətə, - oʊˈfaɪtə / ⓘ) are a division of non-vascular land plants commonly referred to as hepatics or liverworts. Like mosses and hornworts, they have a gametophyte -dominant life cycle, in which cells of the plant carry only a single set of genetic information. It is estimated that there are ...
Thallus of Marchantia polymorpha subsp. ruderalis showing dichotomous branching and gemma cups. It is a thallose liverwort which forms a rosette of flattened thalli with forked branches. The thalli grow up to 10cm long with a width of up to 2cm. It is usually green in colour but older plants can become brown or purplish.
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. The thallus features tiny cup-like structures called gemma cups, containing gemmae ...
Hepatica (hepatica, [2] liverleaf, [3] or liverwort) [4] is a genus of herbaceous perennials in the buttercup family, native to central and northern Europe, Asia and eastern North America. Some botanists include Hepatica within a wider interpretation of Anemone .
Jungermanniales is the largest order of liverworts. They are distinctive among the liverworts for having thin leaf -like flaps on either side of the stem. Most other liverworts are thalloid, with no leaves. Due to their dorsiventral organization and scale-like, overlapping leaves, the Jungermanniales are sometimes called " scale-mosses ". [3]
Leafy liverworts have three rows of small leaves, two lateral in one plane and one ventral, differing from mosses which have small leaves that are usually in more than three rows around the stem. [3] The leaves of leafy liverworts are often dissected or lobed. [4] It is one of the largest leafy liverworts.
Anemone hepatica grows 5–15 cm (2–6 in) high. Leaves and flowers emerge directly from the rhizome, not from a stem above ground. The leaves have three lobes and are fleshy and hairless, 7–9 cm (– in) wide and 5–6 cm (2– in) long. The upper side is dark green with whitish stripes and the lower side is violet or reddish brown.
Riccia is a genus of liverworts in the order Marchantiales. [1]These plants are small and thalloid, i.e. 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.