|
Haplosciadium
''Haplosciadium'' is a monotypic genus of flowering plants in the family Apiaceae (Umbelliferae). Its only species is ''Haplosciadium abyssinicum''. It is a flat rosette plant endemic to the Afro-alpine zones on East African mountains, occurring on moist valley bottoms above . It engages in geocarpy Geocarpy is "an extremely rare means of plant reproduction", in which plants produce diaspores within the soil. This may occur with subterranean flowers (protogeocarpy), or from aerial flowers, parts of which penetrate the soil after flowering ... as an adaptation to living on frost-heaved soils. References Monotypic Apiaceae genera Apiaceae {{Apiaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christian Ferdinand Friedrich Hochstetter
Christian Ferdinand Friedrich Hochstetter (16 February 1787 – 20 February 1860) was a German botanist and Protestant minister. Biography Hochstetter was born in Stuttgart in Baden-Württemberg. He was the father of geologist Ferdinand Hochstetter (1829–1884). In 1807 Hochstetter received his degree of Master of Divinity in Tübingen. While still a student, he became a member of a secret organization headed by Carl Ludwig Reichenbach (1788–1869) that had designs on establishing a colony on Tahiti (''Otaheiti-Gesellschaft''). In 1808 the organization was discovered by authorities, and its members suspected of treason and arrested. Hochstetter was imprisoned for a short period of time for his small role in the secret society. Later on, he spent six months as a teacher in a private institution in Erlangen, and afterwards was a tutor for four years in the house of the Minister of Altenstein in Thuringia. In 1816 he became a pastor and school inspector in Brno, moving to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Taxon
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] |
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] |
Flowering Plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants that produce their seeds enclosed within a fruit. They are by far the most diverse group of land plants with 64 orders, 416 families, approximately 13,000 known genera and 300,000 known species. Angiosperms were formerly called Magnoliophyta (). Like gymnosperms, angiosperms are seed-producing plants. They are distinguished from gymnosperms by characteristics including flowers, endosperm within their seeds, and the production of fruits that contain the seeds. The ancestors of flowering plants diverged from the common ancestor of all living gymnosperms before the end of the Carboniferous, over 300 million years ago. The closest fossil relatives of flowering plants are uncertain and contentious. The earliest angiosperm fossils ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apiaceae
Apiaceae or Umbelliferae is a family of mostly aromatic flowering plants named after the type genus ''Apium'' and commonly known as the celery, carrot or parsley family, or simply as umbellifers. It is the 16th-largest family of flowering plants, with more than 3,700 species in 434 generaStevens, P.F. (2001 onwards)Angiosperm Phylogeny Website Version 9, June 2008. including such well-known and economically important plants as ajwain, angelica, anise, asafoetida, caraway, carrot, celery, chervil, coriander, cumin, dill, fennel, lovage, cow parsley, parsley, parsnip and sea holly, as well as silphium, a plant whose identity is unclear and which may be extinct. The family Apiaceae includes a significant number of phototoxic species, such as giant hogweed, and a smaller number of highly poisonous species, such as poison hemlock, water hemlock, spotted cowbane, fool's parsley, and various species of water dropwort. Description Most Apiaceae are annual, biennial or perennial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rosette (botany)
In botany, a rosette is a circular arrangement of leaves or of structures resembling leaves. In flowering plants, rosettes usually sit near the soil. Their structure is an example of a modified stem in which the internode gaps between the leaves do not expand, so that all the leaves remain clustered tightly together and at a similar height. Some insects induce the development of galls that are leafy rosettes. In bryophytes and algae, a rosette results from the repeated branching of the thallus as the plant grows, resulting in a circular outline. Taxonomies Many plant families have varieties with rosette morphology; they are particularly common in Asteraceae (such as dandelions), Brassicaceae (such as cabbage), and Bromeliaceae. The fern '' Blechnum fluviatile'' or New Zealand Water Fern (''kiwikiwi'') is a rosette plant. Function in flowering plants Often, rosettes form in perennial plants whose upper foliage dies back with the remaining vegetation protecting the plant. Ano ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Afroalpine
The Afromontane regions are subregions of the Afrotropical realm, one of the Earth's eight biogeographic realms, covering the plant and animal species found in the mountains of Africa and the southern Arabian Peninsula. The Afromontane regions of Africa are discontinuous, separated from each other by lower-lying areas, and are sometimes referred to as the Afromontane archipelago, as their distribution is analogous to a series of sky islands. Geography Afromontane communities occur above elevation near the equator, and as low as elevation in the Knysna-Amatole montane forests of South Africa. Afromontane forests are generally cooler and more humid than the surrounding lowlands. The Afromontane archipelago mostly follows the East African Rift from the Red Sea to Zimbabwe, with the largest areas in the Ethiopian Highlands, the Albertine Rift Mountains of Uganda, Rwanda, Burundi, Democratic Republic of the Congo, and Tanzania, and the Eastern Arc highlands of Kenya and Tanzania. O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East African Mountains
The East African mountains are a mountain region in the African Great Lakes, within Kenya, Uganda, Tanzania, Democratic Republic of the Congo, Rwanda and Burundi. Location and description The mountains are related to the East African Rift, and are in two chains, the Western Rift includes the Virunga Mountains, Mitumba Mountains, and the Rwenzori Range, while the mountains to the east include the largest peaks in Africa: the snow-covered Mount Kilimanjaro (5,895m, 19,340 ft), and Mount Kenya (5,199m, 17,058 ft). Other mountains in the Eastern Rift area include Mount Elgon in Kenya and Uganda. All but the Ruwenzori are of volcanic origin. The weather at the highest elevations is often cold and wet. Fauna The mountains are rich in wildlife, including animals who migrate to higher altitudes during the hot season in the surrounding savanna. The mountains are home to a number of endemic bird species such as Hinde's babbler which lives only on Mount Kenya. Threats and p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Ecology
The ''Journal of Ecology'' is a bimonthly peer-reviewed scientific journal covering all aspects of the ecology of plants. It was established in 1913 and is published by Wiley-Blackwell on behalf of the British Ecological Society. The journal publishes papers on plant ecology (including algae) in both terrestrial and aquatic ecosystems. In addition to population and community ecology, articles on biogeochemistry, ecosystems, microbial ecology, physiological plant ecology, climate change, molecular genetics, mycorrhizal ecology, and the interactions between plants and organisms such as animals or bacteria, are published regularly. Besides primary research articles, it publishes "Essay Reviews" and "Forum" articles. In 2008, the first papers in a new series called "Future Directions" were published. These short papers are intended to stimulate debate as to where a field within plant ecology is going, or needs to go. In addition, the journal contains a long-running series on the "Bio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biological Conservation (journal)
''Biological Conservation'' is a peer-reviewed journal of conservation biology. The journal was established in 1968, and is published monthly by Elsevier. The current Editor-in-Chief is Vincent Devictor (Institute of Evolutionary Sciences of Montpellier) . The journal is affiliated with the Society for Conservation Biology The Society for Conservation Biology (SCB) is an 501(c)(3) non-profit international professional organization that is dedicated to conserving biodiversity. There are over 4,000 members worldwide, including students and those in related non-academ .... Abstracting and indexing The journal is abstracted and indexed in the following databases: References External links *{{Official website, http://www.journals.elsevier.com/biological-conservation/ Biology journals Elsevier academic journals Publications established in 1968 English-language journals Monthly journals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geocarpy
Geocarpy is "an extremely rare means of plant reproduction", in which plants produce diaspores within the soil. This may occur with subterranean flowers (protogeocarpy), or from aerial flowers, parts of which penetrate the soil after flowering (hysterocarpy). It has evolved as an effective means of ensuring a suitable environment for the plant's offspring. Geocarpy is also linked with solifluction soils, where rapid thawing and freezing of surface soil causes almost continuous movement. This phenomenon is prevalent in high altitude areas of East Africa. In order to reproduce, geocarpic plants bend their stems so that the fruit can be embedded in the soil during the freezing process while the fruit is still attached to the plant itself. Geocarpy is most frequent in tropical or semi-desert areas, and geocarpic species may be found in the families Araceae, Begoniaceae, Brassicaceae (Cruciferae), Callitrichaceae, Convolvulaceae, Cucurbitaceae, Fabaceae (Leguminosae), Loganiaceae, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frost Heaving
Frost heaving (or a frost heave) is an upwards swelling of soil during freezing conditions caused by an increasing presence of ice as it grows towards the surface, upwards from the depth in the soil where freezing temperatures have penetrated into the soil (the freezing front or freezing boundary). Ice growth requires a water supply that delivers water to the freezing front via capillary action in certain soils. The weight of overlying soil restrains vertical growth of the ice and can promote the formation of lens-shaped areas of ice within the soil. Yet the force of one or more growing ice lenses is sufficient to lift a layer of soil, as much as or more. The soil through which water passes to feed the formation of ice lenses must be sufficiently porous to allow capillary action, yet not so porous as to break capillary continuity. Such soil is referred to as "frost susceptible". The growth of ice lenses continually consumes the rising water at the freezing front. Differential fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.JPG "Click for more on -> Flowering Plant")
.png "Click for more on -> Afroalpine"){kind=spacer}
