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Bryum
''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 Johann Hedwig (8 December 1730 – 18 February 1799), a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Bryum Species
Over 1,000 species were accepted in the moss genus '' Bryum'' until it was split into three genera in a 2005 publication. , the genus has 263 accepted species, 232 synonyms, and 5 unplaced. List A '' Bryum acuminatissimum'' - '' Bryum acutifolium'' - '' Bryum afrocalophyllum'' - '' Bryum alandense'' - '' Bryum albopulvinatum'' - '' Bryum albulum'' - '' Bryum altaicum'' - '' Bryum amblyacis'' - '' Bryum amentirameum'' - '' Bryum anomodon'' - '' Bryum apalodictyoides'' - '' Bryum arachnoideum'' - ''Bryum argenteum'' - '' Bryum argentisetum'' - '' Bryum atrovirens'' - '' Bryum auratum'' - '' Bryum austroturbinatum'' B '' Bryum baeuerlenii'' - '' Bryum bavaricum'' - '' Bryum bharatiense'' - '' Bryum billetii'' - '' Bryum blindii'' - '' Bryum borellii'' - '' Bryum botterii'' - '' Bryum bourgeauanum'' - '' Bryum brachycladulum'' - '' Bryum brevicoma'' - '' Bryum brotherianum'' - '' Bryum bulbiferum'' - '' Bryum bulbigerum'' - '' Bryum bullosum'' C '' Bryum cadetii'' - '' Bryum calobr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryum
''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 Johann Hedwig (8 December 1730 – 18 February 1799), a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryum Argenteum
''Bryum argenteum'', the silvergreen bryum moss or silvery thread moss, is a species of moss in the family Bryaceae. It is one of the most common mosses of urban areas and can be easily recognized without a microscope. Description The species is silvery-green or whitish-green colored when dry. This is because the broadly ovate shaped single leaflets in the tip do not form chlorophyll. The costa extends beyond the middle of the leaf. In damp, undisturbed locations, the branches may also form a more horizontal growth habit. The upper cells of the leaf surface are elongated rhomboid shaped. The capsule of the sporophyte is short cylindrical, appears broader at the base and is dark red to black colored. It has a high ability to tolerate drought and pollution of urban environments. ''B. argenteum'' is considered a desiccation tolerant species that can withstand total drying. While it is a common characteristic in mosses, ''B. argenteum'' was one of the first bryophytes experimentall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gemmabryum
''Gemmabryum'' is a genus of moss in the family Bryaceae. It was separated from the genera ''Bryum'' and '' Brachymenium'' in 2005. It has been argued that the correct name for the genus is ''Osculatia''. Taxonomy The genus ''Gemmabryum'' was first described by J. R. Spence and H. P. Ramsay in 2005. Species previously placed in three sections of the genus ''Bryum'' and one section of the genus '' Brachymenium'' were transferred to the new genus, which is accepted by the World Flora Online World Flora Online is an Internet-based compendium of the world's plant species. Description The World Flora Online (WFO) is an open-access database, launched in October 2012 as a follow-up project to The Plant List, with the aim of publishi ... database . Other sources retain the genus ''Bryum''. In 2018, it was argued that the genus name ''Osculatia'' De Not. had priority for this segregate of ''Bryum'' and ''Brachymenium''. Species , World Flora Online accepted the following species: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moss
Mosses are small, non-vascular plant, non-vascular flowerless plants in the taxonomic phylum, division Bryophyta (, ) ''sensu stricto''. Bryophyta (''sensu lato'', Wilhelm Philippe Schimper, Schimp. 1879) may also refer to the parent group bryophytes, which comprise Marchantiophyta, 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 leaf, leaves that are generally only one cell thick, attached to a plant stem, 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 sporangium, spores. They are typically tall, though some species ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryaceae
Bryaceae is a family of mosses.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). . Genera Genera include: *''Acidodontium'' *''Anomobryum'' (e.g. ''Anomobryum julaceum'') *''Brachymenium'' *''Bryum'' *''Gemmabryum'' *''Haplodontium'' *''Imbribryum'' *''Leptostomopsis'' (formerly part of ''Bryum'') *''Mniobryoides'' *''Ochiobryum'' *''Gemmabryum, Osculatia'' *''Perssonia'' *''Plagiobryoides *''Plagiobryum'' *''Ptychostomum'' (formerly part of ''Bryum'') *''Rhodobryum'' (e.g. ''Rhodobryum roseum'') *''Rosulabryum'' Formerly included *''Roellobryon'' (formerly known as ''Roellia'', now a part of Roellobryaceae) References Bryaceae, Moss families {{bryidae-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 tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. 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 of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphyletic
A polyphyletic group is an assemblage that includes organisms with mixed evolutionary origin but does not include their most recent common ancestor. The term is often applied to groups that share similar features known as Homoplasy, homoplasies, which are explained as a result of convergent evolution. The arrangement of the members of a polyphyletic group is called a polyphyly .. [Source for pronunciation.] 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 photosynthesis, C4 photosynthetic plants, and Xenarthra#Evolutionary relationships, 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 re ... [...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 Vertebrate, 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. Some Monitor lizard, monitor lizards, including Komodo dragons, can reproduce asexually. While all prokaryotes reproduce without the fo ... [...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 t ... [...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, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and en .... It has two subgenera, ''Psychostomum'' (''Ptychostomum'') and ''Psychostomum'' (''Cladodium''). 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 cellulare'' *'' Ptychostomum cernuum'' *'' Ptychostomum chorizodon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
