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Cyclostigma
''Cyclostigma'' is a genus of extinct plants belonging to the Lycopodiopsida (lycopsids). Taxonomy ''Cyclostigma'' Haught. was first used by Samuel Haughton in 1859 for the type species ''C. kiltorkense''. The name ''Cyclostigma'' has been used for a genus no fewer than four times. Three are synonyms: *''Cyclostigma'' Hochst. ex Endl. is a synonym of ''Voacanga'' Thouars. This is the oldest name, dating from 1842, and so would normally have priority but ''Cyclostigma'' Haught. has been conserved against it. *''Cyclostigma'' Klotzsch is a synonym of '' Croton'' L. *''Cyclostigma'' Phil. is a synonym of '' Leptoglossis'' Benth. Hao and Xue in 2013 listed ''Cyclostigma'' as a lycopsid Lycopodiopsida is a class of vascular plants known as lycopods, lycophytes or other terms including the component lyco-. Members of the class are also called clubmosses, firmosses, spikemosses and quillworts. They have dichotomously branching s .... References Prehistoric lycophytes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voacanga
''Voacanga'' is a genus of plants in the family Apocynaceae found in Africa, Southeast Asia, New Guinea, and Australia. the World Checklist of Selected Plant Families recognises 13 species:Search for "Voacanga", ;Species # ''Voacanga africana'' Stapf ex Scott-Elliot - tropical W + C + E + S Africa # ''Voacanga bracteata'' Stapf - tropical W + C Africa # ''Voacanga caudiflora'' Stapf - tropical W Africa # ''Voacanga chalotiana'' Pierre ex Stapf - tropical C Africa # ''Voacanga foetida'' ( Blume) Rolfe -Java, Borneo, Sumatra, Philippines # ''Voacanga globosa'' (Blanco) Merr. - Philippines # ''Voacanga gracilipes'' (Miq.) Markgr. - Maluku # ''Voacanga grandifolia'' (Miq.) Rolfe - Indonesia, Philippines, New Guinea, Queensland # ''Voacanga havilandii'' Ridl. - Sarawak # ''Voacanga megacarpa'' Merr. - Philippines # ''Voacanga pachyceras'' Leeuwenb. - Zaïre # ''Voacanga psilocalyx'' Pierre ex Stapf - Nigeria, Cameroon, Gabon, Republic of Congo # ''Voacanga thouarsii'' Roem. & S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Croton (plant)
''Croton'' is an extensive flowering plant genus in the spurge family, Euphorbiaceae. The plants of this genus were described and introduced to Europeans by Georg Eberhard Rumphius. The common names for this genus are rushfoil and croton, but the latter also refers to ''Codiaeum variegatum''. The generic name comes from the Greek ('), which means "tick" and refers to the shape of the seeds of certain species. Description ''Croton'' is a diverse and complex taxonomic group of plants ranging from herbs and shrubs to trees. A well-known member of this genus is '' Croton tiglium'', a shrub native to Southeast Asia. It was first mentioned in European literature by Cristóbal Acosta in 1578 as lignum pavanae. The oil, used in herbal medicine as a violent purgative, is extracted from its seeds. Currently, it is considered unsafe and it is no longer listed in the pharmacopeias of many countries. Taxonomy Uses Traditional uses ''C. tiglium'' oil has been used in traditional C ... [...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] |
Lycopodiopsida
Lycopodiopsida is a class of vascular plants known as lycopods, lycophytes or other terms including the component lyco-. Members of the class are also called clubmosses, firmosses, spikemosses and quillworts. They have dichotomously branching stems bearing simple leaves called microphylls and reproduce by means of spores borne in sporangia on the sides of the stems at the bases of the leaves. Although living species are small, during the Carboniferous, extinct tree-like forms formed huge forests that dominated the landscape and contributed to coal deposits. The nomenclature and classification of plants with microphylls varies substantially among authors. A consensus classification for extant (living) species was produced in 2016 by the Pteridophyte Phylogeny Group (PPG I), which places them all in the class Lycopodiopsida, which includes the classes Isoetopsida and Selaginellopsida used in other systems. (See Table 2.) Alternative classification systems have used ranks fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samuel Haughton
Samuel Haughton (21 December 1821 – 31 October 1897) was an Irish clergyman, medical doctor, and scientific writer. Biography The scientist Samuel Haughton was born in Carlow, the son of another Samuel Haughton (1786-1874) and grandson (by his second wife Jane Boake) of the three-times-married Samuel Pearson Haughton (1748-1828), a Quaker. Samuel Pearson Haughton was also father, by his third wife Mary Pim, of James "Vegetable" Haughton (1795–1873), a Unitarian, an active philanthropist, a strong supporter of Father Theobald Mathew, a vegetarian, and an anti-slavery worker and writer. The scientist Samuel Haughton had a distinguished career in Trinity College, Dublin and in 1844 he was elected a fellow. Working on mathematical models under James MacCullagh, he was awarded in 1848 the Cunningham Medal by the Royal Irish Academy. In 1847 he had his ordination to the priesthood but he was not someone who preached. He was appointed as professor of geology in Trinity College ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synonym (taxonomy)
The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linnaeus was the first to give a scientific name (under the currently used system of scientific nomenclature) to the Norway spruce, which he called ''Pinus abies''. This name is no longer in use, so it is now a synonym of the current scientific name, ''Picea abies''. * In zoology, moving a species from one genus to another results in a different binomen, but the name is considered an alternative combination rather than a synonym. The concept of synonymy in zoology is reserved for two names at the same rank that refers to a taxon at that rank - for example, the name ''Papilio prorsa'' Linnaeus, 1758 is a junior synonym of ''Papilio levana'' Linnaeus, 1758, being names for different seasonal forms of the species now referred to as ''Araschnia le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptoglossis
''Leptoglossis'' is a genus of flowering plants belonging to the family Solanaceae The Solanaceae , or nightshades, are a family of flowering plants that ranges from annual and perennial herbs to vines, lianas, epiphytes, shrubs, and trees, and includes a number of agricultural crops, medicinal plants, spices, weeds, and orn .... Its native range is Peru to Argentina. Species Species: *'' Leptoglossis albiflora'' *'' Leptoglossis darcyana'' *'' Leptoglossis ferreyraei'' *'' Leptoglossis linifolia'' *'' Leptoglossis lomana'' *'' Leptoglossis schwenckioides'' References {{Taxonbar, from=Q147241 Solanaceae Solanaceae genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Lycophytes
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared 5000 years ago. It took thousands of years for writing systems to be widely adopted, with writing spreading to almost all cultures by the 19th century. The end of prehistory therefore came at very different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilisation, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records, with their neighbors following. Most other civilizations reached the end of prehistory during the following Iron Age. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
