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Exsiccatum
Exsiccata (Latin, ''gen.'' -ae, ''plur.'' -ae) is a work with "published, uniform, numbered set of preserved specimens distributed with printed labels". Typically, exsiccatae refer to numbered collections of dried herbarium specimens respectively preserved biological samples published in several duplicate sets with a common theme/ title like ''Lichenes Helvetici'' (see figure). Exsiccatae are regarded as scientific contributions of the editor(s) with characteristics from the library world (published booklets of scientific literature, with authors/ editors, titles, often published as serials in formats with fascicles) and features from the herbarium world (uniform and numbered collections of duplicate herbarium specimens). Exsiccatae works represent a special method of scholarly communication. The text in the printed matters/published booklets is basically a list of labels (schedae) with informations on each single numbered exsiccatal unit. Extensions of the concept occur. There ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbarium
A herbarium (plural: herbaria) is a collection of preserved plant specimens and associated data used for scientific study. The specimens may be whole plants or plant parts; these will usually be in dried form mounted on a sheet of paper (called ''exsiccatum'', plur. ''exsiccata'') but, depending upon the material, may also be stored in boxes or kept in alcohol or other preservative. The specimens in a herbarium are often used as reference material in describing plant taxa; some specimens may be types. The same term is often used in mycology to describe an equivalent collection of preserved fungi, otherwise known as a fungarium. A xylarium is a herbarium specialising in specimens of wood. The term hortorium (as in the Liberty Hyde Bailey Hortorium) has occasionally been applied to a herbarium specialising in preserving material of horticultural origin. History The making of herbaria is an ancient phenomenon, at least six centuries old, although the techniques have changed l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ludwig Schaerer
Ludwig Emanuel Schaerer (11 June 1785 – 3 February 1853) was a Swiss pastor and lichenologist. Interested in natural history from a young age, Schaerer trained as a teacher and studied theology in Bern. During his career as a teacher, orphanage director, and pastor, he researched extensively and maintained correspondence with foreign botanists interested in cryptogams. Schaerer was best known for his multi-volume work ''Lichenum Helveticorum Spicilegium'' ("Anthology of Swiss Lichens"), published in 12 parts from 1823 to 1842. This series catalogued and described the lichens of Switzerland, particularly those in the Alps, where he often went on collecting excursions. In another series, he compiled and distributed dried herbarium specimens acquired from his collections. Several lichen taxa have been named in honour of Schaerer. Early life and education Ludwig Schaerer was born on June 11, 1785, in Bern. His father, Johann Rudolf, was a professor of biblical studies and Heb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jakob Friedrich Ehrhart
Jakob Friedrich Ehrhart (4 November 1742, Holderbank, Aargau – 26 June 1795) was a German botanist, a pupil of Carl Linnaeus at Uppsala University, and later director of the Botanical Garden of Hannover, where he produced several major botanical works between 1780 and 1793. Ehrhart was the first author to use the rank of subspecies in botanical literature, and he published many subspecific names between 1780 and 1789. In 1779, Carl Peter Thunberg (1743–1828) named a genus of grasses, ''Ehrharta'', in Ehrhart's honor. Publications * ''Chloris hanoverana'', 1776. * ''Supplementum systematis vegetabilium, generum et specierum plantarum'', 1781. * ''Beiträge zur Naturkunde, und den damit verwandten Wissenschaften, besonders der Botanik, Chemie, Haus- und Landwirthschaft, Arzneigelahrtheit und Apothekerkunst'', seven volumes (1787 to 1792) – Contributions to natural history, etc. * Autobiography in Usteri's Annals of Botany.List of publications copied from an article on Jakob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Sumner Cowan
Richard Sumner Cowan (January 23, 1921 – November 17, 1997) was an American botanist. Early life Richard Sumner Cowan was born on January 23, 1921, in Crawfordsville, Indiana. His family moved to Florida and he was educated in the Tampa, Florida area. He returned to his birthplace in Indiana in 1938, and married Mary Frances Minnich in June 1941. In 1942 he received an AB degree from Wabash College. He joined the US Navy in 1943 and was deployed to the Pacific as a Seabee. While serving in the US Navy, he collected plants on Tinian Island, despite the danger of being shot. He earned his master's degree at the University of Hawaii in 1948, and then got a job at New York Botanical Garden. He joined two expeditions to Venezuela in search of tepuis. The first trip was 5 months long, beginning in October 1950. He completed his PhD in 1952 at Columbia University, after which he continued to work at the Botanical Garden. Richard went back to South America to gather some species in Ama ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frans Stafleu
Frans Antonie Stafleu (8 September 1921 – 16 December 1997) was a Dutch systematic botanist, former Chair of the Institute of Systematic Botany at the University of Utrecht, and author of ''Taxonomic Literature: A Selective Guide to Botanical Publications and Collections, with Dates, Commentaries, and Types'' along with 644 other publications. He occupied several positions in the International Association for Plant Taxonomy The International Association for Plant Taxonomy (IAPT) is an organization established to promote an understanding of plant biodiversity, facilitate international communication of research between botanists, and oversee matters of uniformity and .... The latter organization now triennially awards the ''Stafleu Medal'' "for an excellent publication dealing with historical, bibliographic and/or nomenclatural aspects of plant systematics". Selected publications * Notes References * 1921 births 1997 deaths 20th-century Dutch botanists Peopl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy (biology)
In biology, taxonomy () is the scientific study of naming, defining ( circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxa (singular: taxon) and these groups are given a taxonomic rank; groups of a given rank can be aggregated to form a more inclusive group of higher rank, thus creating a taxonomic hierarchy. The principal ranks in modern use are domain, kingdom, phylum (''division'' is sometimes used in botany in place of ''phylum''), class, order, family, genus, and species. The Swedish botanist Carl Linnaeus is regarded as the founder of the current system of taxonomy, as he developed a ranked system known as Linnaean taxonomy for categorizing organisms and binomial nomenclature for naming organisms. With advances in the theory, data and analytical technology of biological systematics, the Linnaean system has transformed into a system of modern biological classification intended to reflect the evolu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lectotype Specimen
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the International Code of Nomenclature for algae, fungi, and plants (ICN), the scientific name of every taxon is almost al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isotype (biology)
A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several examples, but explicitly designated as the holotype. Under the International Code of Zoological Nomenclature (ICZN), a holotype is one of several kinds of name-bearing types. In the International Code of Nomenclature for algae, fungi, and plants (ICN) and ICZN, the definitions of types are similar in intent but not identical in terminology or underlying concept. For example, the holotype for the butterfly '' Plebejus idas longinus'' is a preserved specimen of that subspecies, held by the Museum of Comparative Zoology at Harvard University. In botany, an isotype is a duplicate of the holotype, where holotype and isotypes are often pieces from the same individual plant or samples from the same gathering. A holotype is not necessarily "typi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type (biology)
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the International Code of Nomenclature for algae, fungi, and plants (ICN), the scientific name of every taxon is almost al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Wilhelm Gottlieb Leopold Fuckel
Karl Wilhelm Gottlieb Leopold Fuckel (3 February 1821 – 8 May 1876) was a German botanist who worked largely on fungi. He worked as an apothecary from 1836 to 1852, afterwards deriving income from a vineyard he owned in Oestrich im Rheingau.ADB:Fuckel, Leopold @ The species epithet in the binomen '''', a plant pathogen and the causal agent of disease, was named ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Felix Von Thümen
Felix Karl Albert Ernst Joachim Freiherr von Thümen (6 February 1839, Dresden – 13 October 1892 Teplitz-Schönau) was a German botanist and mycologist. Life Felix von Thümen graduated from the Gymnasium in Dresden and entered the Prussian army at the age of 19, but soon retired due to an injury incurred by a fall from his horse. After a short stint in agriculture he had to abandon the management of his family estates and devoted the rest of his life to botanical and mycological research. Influenced mainly by Ludwig Reichenbach he devoted most of his interest to the study of fungi. In 1876 he became a research assistant at the chemico-physiological research station in Klosterneuburg, a position he occupied for the rest of his life. The position afforded him considerable freedom in choosing his domicile, so that he lived for various periods in Vienna, Berlin and Gorizia. He suffered from a severe heart disease, for which he repeatedly visited the spas of Teplitz-Schönau, where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Drummond (botanist)
Thomas Drummond (1793 — March 1835), was a Scottish botanical collector. Life Thomas Drummond was the younger brother of the botanist James Drummond. He was born in Scotland, and during the early part of his life was at Don's nursery, Forfar. He first became known to botanists by his distributed sets of mosses, ‘Musci Scotici,’ and afterwards was attached as assistant-naturalist to Dr. Richardson in Sir John Franklin's second land expedition. He accordingly sailed from Liverpool on 16 February 1825 and reached New York on the 15th of the following month. The expedition moved westward by the Hudson River and lakes Ontario and Winnipeg to the Mackenzie River. Drummond quit the main party at Cumberland House to explore the Rocky Mountains. On 3 June 1827 Drummond met David Douglas at Carlton House as Douglas was venturing overland from Fort Vancouver toward York Factory, Manitoba on his return trip to London, collecting for the Royal Horticultural Society. In the sprin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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