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Physcomitrium
''Physcomitrium'' is a genus of mosses, commonly called urn moss, that includes about 80 species and has a cosmopolitan distribution. The scientific name comes from the Ancient Greek words ''physa'', meaning bladder, and ''mitrion'', meaning little turban, which together refer to the urn-like calyptra. The common name is derived from its symmetrical, erect and urn-like capsules that lack peristomes, these features characterising the genus. They are commonly found on exposed soils that are often associated with locations that become very wet in the spring, such as along river banks or on alluvial mud. They occur from near sea level to about 2500 metres. The capsules mature over the winter and into the spring. Many species were once circumscribed within the species '' Physcomitrium pyriforme'', which over time has been broken up into many separate species based on variation of the sporophyte and gametophyte A gametophyte () is one of the two alternation of generations, altern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physcomitrium Australe
''Physcomitrium'' is a genus of mosses, commonly called urn moss, that includes about 80 species and has a cosmopolitan distribution. The scientific name comes from the Ancient Greek words ''physa'', meaning bladder, and ''mitrion'', meaning little turban, which together refer to the urn-like calyptra. The common name is derived from its symmetrical, erect and urn-like capsules that lack peristomes, these features characterising the genus. They are commonly found on exposed soils that are often associated with locations that become very wet in the spring, such as along river banks or on alluvial mud. They occur from near sea level to about 2500 metres. The capsules mature over the winter and into the spring. Many species were once circumscribed within the species '' Physcomitrium pyriforme'', which over time has been broken up into many separate species based on variation of the sporophyte and gametophyte A gametophyte () is one of the two alternation of generations, altern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physcomitrium Turbinatum
''Physcomitrium'' is a genus of mosses, commonly called urn moss, that includes about 80 species and has a cosmopolitan distribution. The scientific name comes from the Ancient Greek words ''physa'', meaning bladder, and ''mitrion'', meaning little turban, which together refer to the urn-like calyptra. The common name is derived from its symmetrical, erect and urn-like capsules that lack peristomes, these features characterising the genus. They are commonly found on exposed soils that are often associated with locations that become very wet in the spring, such as along river banks or on alluvial mud. They occur from near sea level to about 2500 metres. The capsules mature over the winter and into the spring. Many species were once circumscribed within the species '' Physcomitrium pyriforme'', which over time has been broken up into many separate species based on variation of the sporophyte and gametophyte. Selected species *''Physcomitrium australe ''Physcomitrium'' is a ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physcomitrium Megalocarpum
''Physcomitrium'' is a genus of mosses, commonly called urn moss, that includes about 80 species and has a cosmopolitan distribution. The scientific name comes from the Ancient Greek words ''physa'', meaning bladder, and ''mitrion'', meaning little turban, which together refer to the urn-like calyptra. The common name is derived from its symmetrical, erect and urn-like capsules that lack peristomes, these features characterising the genus. They are commonly found on exposed soils that are often associated with locations that become very wet in the spring, such as along river banks or on alluvial mud. They occur from near sea level to about 2500 metres. The capsules mature over the winter and into the spring. Many species were once circumscribed within the species '' Physcomitrium pyriforme'', which over time has been broken up into many separate species based on variation of the sporophyte and gametophyte. Selected species *''Physcomitrium australe'' *'' Physcomitrium californ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physcomitrium Kellermanii
''Physcomitrium'' is a genus of mosses, commonly called urn moss, that includes about 80 species and has a cosmopolitan distribution. The scientific name comes from the Ancient Greek words ''physa'', meaning bladder, and ''mitrion'', meaning little turban, which together refer to the urn-like calyptra. The common name is derived from its symmetrical, erect and urn-like capsules that lack peristomes, these features characterising the genus. They are commonly found on exposed soils that are often associated with locations that become very wet in the spring, such as along river banks or on alluvial mud. They occur from near sea level to about 2500 metres. The capsules mature over the winter and into the spring. Many species were once circumscribed within the species '' Physcomitrium pyriforme'', which over time has been broken up into many separate species based on variation of the sporophyte and gametophyte. Selected species *''Physcomitrium australe'' *'' Physcomitrium californ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physcomitrium Drummondii
''Physcomitrium'' is a genus of mosses, commonly called urn moss, that includes about 80 species and has a cosmopolitan distribution. The scientific name comes from the Ancient Greek words ''physa'', meaning bladder, and ''mitrion'', meaning little turban, which together refer to the urn-like calyptra. The common name is derived from its symmetrical, erect and urn-like capsules that lack peristomes, these features characterising the genus. They are commonly found on exposed soils that are often associated with locations that become very wet in the spring, such as along river banks or on alluvial mud. They occur from near sea level to about 2500 metres. The capsules mature over the winter and into the spring. Many species were once circumscribed within the species '' Physcomitrium pyriforme'', which over time has been broken up into many separate species based on variation of the sporophyte and gametophyte. Selected species *''Physcomitrium australe'' *'' Physcomitrium californ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physcomitrium Californicum
''Physcomitrium'' is a genus of mosses, commonly called urn moss, that includes about 80 species and has a cosmopolitan distribution. The scientific name comes from the Ancient Greek words ''physa'', meaning bladder, and ''mitrion'', meaning little turban, which together refer to the urn-like calyptra. The common name is derived from its symmetrical, erect and urn-like capsules that lack peristomes, these features characterising the genus. They are commonly found on exposed soils that are often associated with locations that become very wet in the spring, such as along river banks or on alluvial mud. They occur from near sea level to about 2500 metres. The capsules mature over the winter and into the spring. Many species were once circumscribed within the species '' Physcomitrium pyriforme'', which over time has been broken up into many separate species based on variation of the sporophyte and gametophyte. Selected species *''Physcomitrium australe'' *'' Physcomitrium californ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physcomitrium Pyriforme
''Physcomitrium pyriforme'', commonly known as common bladder-moss, is a bryophyte native to all continents except South America and Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean, it contains the geographic South Pole. Antarctica is the fifth-largest contine .... Its capsules mature beginning in late fall and through the spring. It is most commonly found in wet soils in disturbed locations. A highly variable species, size, leaf characters and shape of the capsule vary across its range, but often within populations as well. References External links * Funariales {{Bryophyte-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sporophyte
A sporophyte () is the diploid multicellular stage in the life cycle of a plant or alga which produces asexual spores. This stage alternates with a multicellular haploid gametophyte phase. Life cycle The sporophyte develops from the zygote produced when a haploid egg cell is fertilized by a haploid sperm and each sporophyte cell therefore has a double set of chromosomes, one set from each parent. All land plants, and most multicellular algae, have life cycles in which a multicellular diploid sporophyte phase alternates with a multicellular haploid gametophyte phase. In the seed plants, the largest groups of which are the gymnosperms and flowering plants (angiosperms), the sporophyte phase is more prominent than the gametophyte, and is the familiar green plant with its roots, stem, leaves and cones or flowers. In flowering plants the gametophytes are very reduced in size, and are represented by the germinated pollen and the embryo sac. The sporophyte produces spores (hence t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gametophyte
A gametophyte () is one of the two alternation of generations, alternating multicellular organism, multicellular phases in the life cycles of plants and algae. It is a haploid multicellular organism that develops from a haploid spore that has one set of chromosomes. The gametophyte is the Sexual reproduction of plants, sexual phase in the life cycle of plants and algae. It develops sex organs that produce gametes, haploid sex cells that participate in fertilization to form a diploid zygote which has a double set of chromosomes. Cell division of the zygote results in a new diploid multicellular organism, the second stage in the life cycle known as the sporophyte. The sporophyte can produce haploid spores by meiosis that on germination produce a new generation of gametophytes. Algae In some multicellular green algae (''Ulva lactuca'' is one example), red algae and brown algae, sporophytes and gametophytes may be externally indistinguishable (isomorphic). In ''Ulva (genus), Ulv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moss
Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta (, ) '' sensu stricto''. Bryophyta (''sensu lato'', Schimp. 1879) may also refer to the parent group bryophytes, which comprise liverworts, mosses, and hornworts. Mosses typically form dense green clumps or mats, often in damp or shady locations. The individual plants are usually composed of simple leaves that are generally only one cell thick, attached to a stem that may be branched or unbranched and has only a limited role in conducting water and nutrients. Although some species have conducting tissues, these are generally poorly developed and structurally different from similar tissue found in vascular plants. Mosses do not have seeds and after fertilisation develop sporophytes with unbranched stalks topped with single capsules containing spores. They are typically tall, though some species are much larger. ''Dawsonia'', the tallest moss in the world, can grow to in height. There are a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peristome
Peristome (from the Greek ''peri'', meaning 'around' or 'about', and ''stoma'', 'mouth') is an anatomical feature that surrounds an opening to an organ or structure. Some plants, fungi, and shelled gastropods have peristomes. In mosses In mosses, the peristome is a specialized structure in the sporangium that allows for gradual spore discharge, instead of releasing them all at once. Most mosses produce a capsule with a lid (the operculum) which falls off when the spores inside are mature and thus ready to be dispersed. The opening thus revealed is called the ''stoma'' (meaning "mouth") and is surrounded by one or two peristomes. Each peristome is a ring of triangular "teeth" formed from the remnants of dead cells with thickened cell walls. There are usually 16 such teeth in a single peristome, separate from each other and able to both fold in to cover the stoma as well as fold back to open the stoma. This articulation of the teeth is termed arthrodontous and is found in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
