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Cryptomitrium Tenerum
''Cryptomitrium tenerum'' is a species of liverwort native to North America. It is the only representative of its genus on the continent. Description Like most other Marchantiales, it has a flat, dichotomously branched thallus, which in this species is pale green, flattened, dichotomously branched, thin, and somewhat shiny, measuring 0.6 to 1.5 cm long, less than 1 cm wide. The thallus margins are brownish purple in patches and somewhat undulate, curling upward when dry. The dorsal surface has a faint pattern of irregular polygons, and around inconspicuous pores to the air chambers below. The ventral surface is dark purple, shiny towards the margins, and green medially. The ventral scales are small, dark, and purple, poorly developed at maturity. The peculiar oil bodies found in so many liverworts are found scattered throughout the thallus, ventral scales, and sporogonial receptacle. Cryptomitrium does not reproduce asexually via Gemma (botany), gemmae. It usually rea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liverwort
The Marchantiophyta () 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 about 9000 species of liverworts. Some of the more familiar species grow as a flattened leafless thallus, but most species are leafy with a form very much like a flattened moss. Leafy species can be distinguished from the apparently similar mosses on the basis of a number of features, including their single-celled rhizoids. Leafy liverworts also differ from most (but not all) mosses in that their leaves never have a costa (present in many mosses) and may bear marginal cilia (very rare in mosses). Other differences are not universal for all mosses and liverworts, but the occurrence of leaves arranged in three ranks, the presence of deep lobes or segmented leaves, or a lack of clearly diff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
