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Bryum Hedbergii
''Bryum'' is a genus of mosses in the family Bryaceae. It was considered the largest genus of mosses, in terms of the number of species (over 1000), until it was split into three separate genera in a 2005 publication. As of 2013, the classification of both ''Bryum'' and the family Bryaceae to which it belongs underwent significant changes based on DNA studies.Genus ''Bryum'', California Moss eFlora, Jepson eFlora for CA Vascular Plants, University Herbarium, University of California/ref> Description ''Bryum'' is a polyphyletic genus that has high morphological variation. Bryum species generally have shorter laminal cells with short, thick, and rounded stems. All ''Bryum'' species exhibit narrowed cells at the margins. Bryum species can be identified through patterns of asexual reproduction, coloration features of the stem and leaf base, and the strength of the leaf border. History The genus was described by Johann Hedwig in 1801, with the name being derived from the Greek word ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryum Capillare
''Ptychostomum capillare'', formerly designed as ''Bryum capillare,'' is a species of moss belonging to the family Bryaceae. It has cosmopolitan distribution. ''Ptychostomum capillare'' is known to be able to use artificial light to grow in places which are otherwise devoid of natural light, such as Crystal Cave in Wisconsin Wisconsin () is a state in the upper Midwestern United States. Wisconsin is the 25th-largest state by total area and the 20th-most populous. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake M .... References Bryaceae {{Bryophyte-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Hedwig
Johann Hedwig (8 December 1730 – 18 February 1799), also styled as Johannes Hedwig, was a German botanist notable for his studies of mosses. He is sometimes called the "father of bryology". He is known for his particular observations of sexual reproduction in the cryptogams. Many of his writings were in Latin, and his name is rendered in Latin as Ioannis Hedwig or Ioanne Hedwig. Early life Hedwig was born in Brașov, Transylvania, on 8 December 1730. As the son of a shoemaker, he grew up in poverty. It was in his childhood he became fascinated with mosses.Isely, Duane. One Hundred and One Botanists. Purdue University Press, 2002. He went on to study medicine at the University of Leipzig, and received his medical degree in 1759. Career After receiving his degree, Hedwig worked as a physician for the next twenty years. When he was not granted a license to practice in Transylvania with his Leipzig degree, he worked as a general practitioner in Chemnitz. It was during this time ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Bryum Species
Over 1,000 species are currently accepted in the moss genus ''Bryum'': A ''Bryum acuminatissimum'' - ''Bryum acutifolium'' - ''Bryum aeneum'' - ''Bryum aequabile'' - ''Bryum afrocalophyllum'' - ''Bryum alandense'' - ''Bryum albomarginatum'' - ''Bryum albopulvinatum'' - ''Bryum albulum'' - ''Bryum alexandri'' - ''Bryum algovicum'' - ''Bryum alpiniforme'' - ''Bryum alpinum'' - ''Bryum altaicum'' - ''Bryum altisetum'' - ''Bryum amblyacis'' - ''Bryum amblyodon'' - ''Bryum amblyphyllum'' - ''Bryum amentirameum'' - ''Bryum anomodon'' - ''Bryum apalodictyoides'' - ''Bryum apiculatum'' - ''Bryum appressifolium'' - ''Bryum appressum'' - ''Bryum arachnoideum'' - ''Bryum archangelicum'' - ''Bryum arcticum'' - ''Bryum argenteum'' - ''Bryum argentisetum'' - ''Bryum argyroglyphodon'' - ''Bryum ateleostomum'' - ''Bryum atenense'' - ''Bryum atrovirens'' - ''Bryum auricomum'' - ''Bryum australe'' - ''Bryum austroturbinatum'' - ''Bryum axel-blyttii'' - ''Bryum axillare'' B ''Bryum baeuerlenii'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...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] |
Bryaceae
Bryaceae is a family of mosses. Genera Genera include:Buck, William R. & Bernard Goffinet. 2000. "Morphology and classification of mosses", pages 71-123 ''in'' A. Jonathan Shaw & Bernard Goffinet (Eds.), ''Bryophyte Biology''. (Cambridge: Cambridge University Press). . *'' Acidodontium'' *''Anomobryum'' (e.g. ''Anomobryum julaceum'') *'' Brachymenium'' *''Bryum'' *'' Imbribryum'' *'' Leptostomopsis'' (formerly part of ''Bryum'') *'' Mniobryoides'' *'' Ochiobryum'' *'' Osculatia'' *'' Perssonia'' *'' Plagiobryoides *''Plagiobryum'' *'' Ptychostomum'' (formerly part of ''Bryum'') *''Rhodobryum'' (e.g. ''Rhodobryum roseum ''Rhodobryum roseum'', commonly known as rose moss, is a species of moss of the subclass Bryidae and family Bryaceae, found throughout most of the world in woods or sheltered grassy places. It rarely forms sporophytes and spore cases, and primari ...'') *'' Roellobryon'' (formerly known as ''Roellia'') *'' Rosulabryum'' References Moss f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphyletic
A polyphyletic group is an assemblage of organisms or other evolving elements that is of mixed evolutionary origin. The term is often applied to groups that share similar features known as homoplasies, which are explained as a result of convergent evolution. The arrangement of the members of a polyphyletic group is called a polyphyly .. ource for pronunciation./ref> It is contrasted with monophyly and paraphyly. For example, the biological characteristic of warm-bloodedness evolved separately in the ancestors of mammals and the ancestors of birds; "warm-blooded animals" is therefore a polyphyletic grouping. Other examples of polyphyletic groups are algae, C4 photosynthetic plants, and edentates. Many taxonomists aim to avoid homoplasies in grouping taxa together, with a goal to identify and eliminate groups that are found to be polyphyletic. This is often the stimulus for major revisions of the classification schemes. Researchers concerned more with ecology than with systema ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asexual Reproduction
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction from either unicellular or multicellular organisms inherit the full set of genes of their single parent and thus the newly created individual is genetically and physically similar to the parent or an exact clone of the parent. Asexual reproduction is the primary form of reproduction for single-celled organisms such as archaea and eubacteria, bacteria. Many Eukaryote, eukaryotic organisms including plants, animals, and Fungus, fungi can also reproduce asexually. In vertebrates, the most common form of asexual reproduction is parthenogenesis, which is typically used as an alternative to sexual reproduction in times when reproductive opportunities are limited. Komodo dragons and some monitor lizards can also reproduce asexually. While all prokaryotes reproduce without the formation and fusion of gametes, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John R
John R. (born John Richbourg, August 20, 1910 - February 15, 1986) was an American radio disc jockey who attained fame in the 1950s and 1960s for playing rhythm and blues music on Nashville radio station WLAC. He was also a notable record producer and artist manager. Richbourg was arguably the most popular and charismatic of the four announcers at WLAC who showcased popular African-American music in nightly programs from the late 1940s to the early 1970s. (The other three were Gene Nobles, Herman Grizzard, and Bill "Hoss" Allen.) Later rock music disc jockeys, such as Alan Freed and Wolfman Jack, mimicked Richbourg's practice of using speech that simulated African-American street language of the mid-twentieth century. Richbourg's highly stylized approach to on-air presentation of both music and advertising earned him popularity, but it also created identity confusion. Because Richbourg and fellow disc jockey Allen used African-American speech patterns, many listeners thought that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ptychostomum
''Ptychostomum'' is a genus of mosses belonging to the family Bryaceae. It has an almost cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The ext .... Species The following species are recognised in the genus ''Ptychostomum'': *'' Ptychostomum acutiforme'' *'' Ptychostomum altisetum'' *'' Ptychostomum amblyodon'' *'' Ptychostomum angustifolium'' *'' Ptychostomum archangelicum'' *'' Ptychostomum arcticum'' *'' Ptychostomum austriacum'' *'' Ptychostomum badium'' *'' Ptychostomum bimum'' *'' Ptychostomum bornholmense'' *'' Ptychostomum bryoides'' *'' Ptychostomum calophyllum'' *'' Ptychostomum capillare'' *'' Ptychostomum cellulare'' *'' Ptychostomum cernuum'' *'' Ptychostomum chorizodontum'' *'' Ptychostomum compactum'' *'' Ptychostomum creberrimum' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
