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Mougeotiopsis
''Mougeotiopsis'' is a monotypic genus of algae belonging to the family Zygnemataceae. It only contains one known species, ''Mougeotiopsis calospora'' Palla The genus name of ''Mougeotiopsis'' is in honour of Jean-Baptiste Mougeot (1776–1858), who was a French physician and botanist. The genus was circumscribed by Eduard Palla Eduard Palla (3 September 1864 – 7 March 1922) was an Austrian botanist and mycologist of Moravian descent. As a botanist he specialized in research of Cyperaceae (sedges), of which he was the taxonomic authority of many species. From 1883 to ... in Ber. Deutsch. Bot. Ges. vol.12 n pages 228, 234-235 in 1894. References {{Taxonbar, from=Q104813549 Zygnemataceae Charophyta genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zygnemataceae
The Zygnemataceae are a family of filamentous or unicellular, uniseriate (unbranched) green algae. The filaments are septated and reproduction is by conjugation; ''Spirogyra'' is commonly used in schools to demonstrate this kind of reproduction. The family is notable for its diversely shaped chloroplasts, such as stellate in ''Zygnema'', helical in ''Spirogyra'', and flat in ''Mougeotia''. The Zygnemataceae are cosmopolitan, but though all generally occur in the same types of habitats, ''Mougeotia'', ''Spirogyra'', and ''Zygnema'' are by far the most common; in one study across North America, 95% of the Zygnemataceae collected were in these three genera. Classification and identification is primarily by the morphology of the conjugation, which is somewhat rare to find in natural populations of permanent water bodies; when in the vegetative state, the rarer genera resemble the three most common, and are often mistaken for them and catalogued as such. Conjugation can be induced in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-Baptiste Mougeot
Jean-Baptiste Mougeot (25 September 1776, in Bruyères – 5 December 1858) was a French physician and botanist. From 1798 to 1802, he was stationed in Germany as an army health officer, afterwards returning to his hometown of Bruyères, where he settled as a physician. From 1833 until his death in 1858, he was a member of the ''conseil général'' for the département of Vosges.BHL Taxonomic literature : a selective guide to botanical publications The algae genera ''Mougeotia'' and '' Mougeotiopsis'' (family ) are named in his honor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Algae
Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular microalgae, such as ''Chlorella,'' ''Prototheca'' and the diatoms, to multicellular forms, such as the giant kelp, a large brown alga which may grow up to in length. Most are aquatic and autotrophic (they generate food internally) and lack many of the distinct cell and tissue types, such as stomata, xylem and phloem that are found in land plants. The largest and most complex marine algae are called seaweeds, while the most complex freshwater forms are the ''Charophyta'', a division of green algae which includes, for example, ''Spirogyra'' and stoneworts. No definition of algae is generally accepted. One definition is that algae "have chlorophyll ''a'' as their primary photosynthetic pigment and lack a sterile covering of cells around thei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botanist
Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek word (''botanē'') meaning "pasture", " herbs" "grass", or " fodder"; is in turn derived from (), "to feed" or "to graze". Traditionally, botany has also included the study of fungi and algae by mycologists and phycologists respectively, with the study of these three groups of organisms remaining within the sphere of interest of the International Botanical Congress. Nowadays, botanists (in the strict sense) study approximately 410,000 species of land plants of which some 391,000 species are vascular plants (including approximately 369,000 species of flowering plants), and approximately 20,000 are bryophytes. Botany originated in prehistory as herbalism with the efforts of early humans to identify – and later cultivate – edible, med ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circumscription (taxonomy)
In biological taxonomy, circumscription is the content of a taxon, that is, the delimitation of which subordinate taxa are parts of that taxon. If we determine that species X, Y, and Z belong in Genus A, and species T, U, V, and W belong in Genus B, those are our circumscriptions of those two genera. Another systematist might determine that T, U, V, W, X, Y, and Z all belong in genus A. Agreement on circumscriptions is not governed by the Codes of Zoological or Botanical Nomenclature, and must be reached by scientific consensus. A goal of biological taxonomy is to achieve a stable circumscription for every taxon. This goal conflicts, at times, with the goal of achieving a natural classification that reflects the evolutionary history of divergence of groups of organisms. Balancing these two goals is a work in progress, and the circumscriptions of many taxa that had been regarded as stable for decades are in upheaval in the light of rapid developments in molecular phylogenetics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eduard Palla
Eduard Palla (3 September 1864 – 7 March 1922) was an Austrian botanist and mycologist of Moravian descent. As a botanist he specialized in research of Cyperaceae (sedges), of which he was the taxonomic authority of many species. From 1883 to 1887 he studied natural sciences at the University of Vienna, receiving his doctorate with a dissertation on the plant anatomy, anatomy and systematics of Cyperaceae. Following graduation he worked as an assistant to Gottlieb Haberlandt at the University of Graz, where in 1891 he obtained his habilitation in botany. In 1900–01 he conducted investigations of sedges and tropical fungi on Java and Sumatra of the Dutch East Indies. In 1909 he became an associate professor at Graz, followed by a full professorship in 1913. Selected works * ''Atlas der Alpenflora'' (with Karl Wilhelm von Dalla Torre and Anton Hartinger), II, new edition, 1897 – Atlas of Alpine plants, Alpine flora. * ''Ueber die gattung Phyllactinia'', 1899 – On the genu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
