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brussels_plants [2008-10-14 13:53] – lina | brussels_plants [2008-10-14 13:54] – lina | ||
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* Galinsoga ciliata | * Galinsoga ciliata | ||
* Marchantiophyta/ | * Marchantiophyta/ | ||
- | --Description--Pellia epiphylla | + | --Description-- |
Most liverworts are small, usually from 2–20 millimetres (0.08–0.8 in) wide with individual plants less than 10 centimetres (4 in) long,[5] so they are often overlooked. The most familiar liverworts consist of a prostrate, flattened, ribbon-like or branching structure called a thallus (plant body); these liverworts are termed thallose liverworts. However, most liverworts produce flattened stems with overlapping scales or leaves in three or more ranks, the middle rank being conspicuously different from the outer ranks; these are called leafy liverworts or scale liverworts.[6][7] | Most liverworts are small, usually from 2–20 millimetres (0.08–0.8 in) wide with individual plants less than 10 centimetres (4 in) long,[5] so they are often overlooked. The most familiar liverworts consist of a prostrate, flattened, ribbon-like or branching structure called a thallus (plant body); these liverworts are termed thallose liverworts. However, most liverworts produce flattened stems with overlapping scales or leaves in three or more ranks, the middle rank being conspicuously different from the outer ranks; these are called leafy liverworts or scale liverworts.[6][7] | ||
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Liverworts have a gametophyte-dominant life cycle, with the sporophyte dependent on the gametophyte.[11] Cells in a typical liverwort plant each contain only a single set of genetic information, | Liverworts have a gametophyte-dominant life cycle, with the sporophyte dependent on the gametophyte.[11] Cells in a typical liverwort plant each contain only a single set of genetic information, | ||
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--Ecology-- | --Ecology-- | ||
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Today, liverworts can be found in many ecosystems across the planet except the sea and excessively dry environments, | Today, liverworts can be found in many ecosystems across the planet except the sea and excessively dry environments, | ||
-Information source: | -Information source: |