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Desmatractum
''Desmatractum'' is a genus of green algae The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga as ..., in the order Chlamydomonadales. References External links Scientific references Scientific databases AlgaTerra databaseIndex Nominum Genericorum Chlamydomonadales genera Chlamydomonadales {{Chlorophyceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William West (botanist)
William West, FLS (22 February 1848 – 14 May 1914) was an English pharmacist, botanist, microscopist and writer, particularly noted for his studies of freshwater algae. His sons, both botanists, were William West Jr with whom he did fieldwork, and George Stephen West with whom West co-wrote botanical publications for more than 20 years. West was born in Leeds in the West Riding of Yorkshire. He was the son of a cloth-dresser and a dressmaker, and his training as a pharmacist was probably via an apprenticeship in a chemist shop, which would have involved the study of plants. For most of his life, West ran his own pharmacy in Bradford. He was self-trained in botany, and for some years he ran a microscopy partnership with Jean Claudius Tempère, selling slides. In 1881 West published his first academic paper, "Bryological Notes". For much of his writing career, he collaborated with his son George Stephen, writing papers for journals, and publishing books. Research for th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Hippolyte Chodat
Robert Hippolyte Chodat (4 June 1865, Moutier – 28 April 1934) was a Swiss botanist and phycologist who was a professor and director of the botanical institute at the University of Geneva. He studied medicine and botany at Geneva, where he was later a lecturer of pharmacy Pharmacy is the science and practice of discovering, producing, preparing, dispensing, reviewing and monitoring medications, aiming to ensure the safe, effective, and affordable use of medication, medicines. It is a miscellaneous science as it .... In 1889 he attained the title of associate professor, two years later becoming a full professor of medical and pharmaceutical botany. From 1900 onward, he taught classes in general and systematic botany. In 1908 he was appointed Rector (academia), rector at the University of Geneva. Chodat was a leading authority of the botanical family Polygalaceae. In 1914, with Emil Hassler (1864–1937), he collected plants in Región Oriental of Paraguay. He was made Cheva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jadwiga Wołoszyńska
Jadwiga Wołoszyńska (5 April 1882 in Nadwórna - 30 August 1951 in Kraków) was a Polish botanist known for studying algology, limnology, and paleobotany Paleobotany, which is also spelled as palaeobotany, is the branch of botany dealing with the recovery and identification of plant remains from geological contexts, and their use for the biological reconstruction of past environments (paleogeogr .... She identified new types and species (e.g. ''Prorocentrum cassubicum'' (Woloszynska) Dodge (1975) of algae and studied lakes in Poland, Lithuania, Ukraine, Java, Sumatra and Africa References 1882 births 1951 deaths People from Nadvirna Polish Austro-Hungarians People from the Kingdom of Galicia and Lodomeria 20th-century Polish women scientists 20th-century Polish botanists Polish limnologists University of Lviv alumni Academic staff of Jagiellonian University Burials at Rakowicki Cemetery {{Poland-botanist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of Taxonomy (biology), 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 reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), 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 binomial nomenclature, 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 specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus (biology)
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below 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 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. phylogenetic analysis should clearly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Algae
The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/ Streptophyta. The land plants ( Embryophytes) have emerged deep in the Charophyte alga as sister of the Zygnematophyceae. Since the realization that the Embryophytes emerged within the green algae, some authors are starting to properly include them. The completed clade that includes both green algae and embryophytes is monophyletic and is referred to as the clade Viridiplantae and as the kingdom Plantae. The green algae include unicellular and colonial flagellates, most with two flagella per cell, as well as various colonial, coccoid and filamentous forms, and macroscopic, multicellular seaweeds. There are about 22,000 species of green algae. Many species live most of their lives as single cells, while other species form coenobia (colonies), long filaments, or highly differentiated macroscopic seaweeds. A few oth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chlamydomonadales
Chlamydomonadales, also known as Volvocales, are an order of flagellated or pseudociliated green algae, specifically of the Chlorophyceae.See the NCBIbr>webpage on Chlamydomonadales Data extracted from the Chlamydomonadales can form planar or spherical colonies. These vary from '' Gonium'' (four to 32 cells) up to '' Volvox'' (500 cells or more). Each cell has two flagella, and is similar in appearance to ''Chlamydomonas'', with the flagella throughout the colony moving in coordination. Both asexual and sexual reproduction occur. In the former, cells divide until they form new colonies, which are then released. In the smaller forms, typically all cells are involved, but larger forms have anterior vegetative and posterior reproductive cells. Sexual reproduction varies from isogamy (both genders produce flagellated gametes of equal size) to oogamy (one gender produces a much larger, nonmotile gamete). The classification of the Chlamydomonadales varies. Very often they are take ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
