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Aichryson Dumosum
''Aichryson dumosum'' is a critically endangered species of succulent plant of the family Crassulaceae endemic to Madeira. Description ''Aichryson dumosum'' is a glandular plant up to in height, with reddish purple branches. Flowers are in diagonal, most with 7 petals, in loose summits. Petals , lanceolate, bright golden yellow with a dorsal central rib. Distribution and habitat The species is endemic to one single locality on Calheta Municipality, Madeira Island Madeira is a Portuguese island, and is the largest and most populous of the Madeira Archipelago. It has an area of , including Ilhéu de Agostinho, Ilhéu de São Lourenço, Ilhéu Mole (northwest). As of 2021, Madeira had a total population o ... and is estimated to have around 50 to 250 individuals occupying only . It grows in crevices and sheltered areas typical for micro-habitats consisting of an agglomeration of rocks. It is mainly threatened by invasive species, trampling, fires, droughts and landslides. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Thomas Lowe
Richard Thomas Lowe (1802–1874) was an English botanist, ichthyologist, malacologist, and clergyman. In 1825 he graduated from Christ's College, Cambridge, and in the same year he took holy orders. In 1832 he became a clergyman in the Madeira Islands, where he was also a part-time naturalist, extensively studying the local flora and fauna. He wrote a book on the Madeiran flora. He died in 1874 when the ship he was on was wrecked off the Isles of Scilly. Taxa Lowe named and described numerous molluscan taxa, including: * '' Caseolus'', a land snail genus and eight species within it * '' Lemniscia'', a land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial molluscs, terrestrial gastropod mollusks that have gastropod shell, shel ... genus and two species within it See also * :Taxa named by Richard Thomas Lowe References * Notes 1802 birt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Lloyd Praeger
Robert Lloyd Praeger (25 August 1865 – 5 May 1953) was an Irish naturalist, writer and librarian. Biography Early life and education From a Unitarian background, he was born and raised in Holywood, County Down; he had four brothers and a sister. His father was born in the Netherlands, and imported linen, while his mother's family had a history of producing businesspeople, antiquarians and naturalists; an uncle was a co-founder of the Belfast Naturalists' Field Club. Praeger attended the primary school of the Reverend McAlister and then the nearby Sullivan Upper School, followed by the Belfast Academical Institution. He joined the Belfast Naturalists Field Club (BNFC) at age 11, and was already judging a category in the precursor to the Chelsea Flower Show at 17. Praeger attended what is now Queen's University Belfast from 1882, earning a B.A. in 1885 and a B.Eng. in 1886. While at college he also became very active in the BNFC, learning a range of practical naturalist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Of The World Online
Plants of the World Online (POWO) is an online taxonomic database published by the Royal Botanic Gardens, Kew. History Following the Convention on Biological Diversity, the Royal Botanic Gardens in Kew launched Plants of the World Online in March 2017 with the goal of creating an exhaustive online database of all seed-bearing plants worldwide. (Govaerts wrongly speaks of "Convention for Botanical Diversity (CBD)). The initial focus was on tropical African flora, particularly flora ''Zambesiaca'', flora of West and East Tropical Africa. Since March 2024, the website has displayed AI-generated predictions of the extinction risk for each plant. Description The database uses the same taxonomical source as the International Plant Names Index, which is the World Checklist of Vascular Plants (WCVP). The database contains information on the world's flora gathered from 250 years of botanical research. It aims to make available data from projects that no longer have an online ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Botanic Gardens, Kew
Royal Botanic Gardens, Kew is a non-departmental public body in the United Kingdom sponsored by the Department for Environment, Food and Rural Affairs. An internationally important botanical research and education institution, it employs 1,100 staff. Its board of trustees is chaired by Dame Amelia Fawcett. The organisation manages botanic gardens at Kew in Richmond upon Thames in south-west London, and at Wakehurst, a National Trust property in Sussex which is home to the internationally important Millennium Seed Bank, whose scientists work with partner organisations in more than 95 countries. Kew, jointly with the Forestry Commission, founded Bedgebury National Pinetum in Kent in 1923, specialising in growing conifers. In 1994, the Castle Howard Arboretum Trust, which runs the Yorkshire Arboretum, was formed as a partnership between Kew and the Castle Howard Estate. In 2019, the organisation had 2,316,699 public visitors at Kew, and 312,813 at Wakehurst. Its site ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Environment Agency
The European Environment Agency (EEA) is the agency of the European Union (EU) which provides independent information on the environment. Definition The European Environment Agency (EEA) is the agency of the European Union (EU) which provides independent information on the environment. Its goal is to help those involved in developing, implementing and evaluating environmental policy, and to inform the general public. Organization The EEA was established by the European Economic Community (EEC) Regulation 1210/1990 (amended by EEC Regulation 933/1999 and EC Regulation 401/2009) and became operational in 1994, headquartered in Copenhagen, Denmark. The agency is governed by a management board composed of representatives of the governments of its 32 member states, a European Commission representative and two scientists appointed by the European Parliament, assisted by its Scientific Committee. The current Executive Director of the agency is Leena Ylä-Mononen, who has been appo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crassulaceae
The Crassulaceae (, from Latin ''crassus'', thick), also known as the crassulas, the stonecrops or the orpine family, are a diverse Family (biology), family of dicotyledon angiosperms primarily characterized by succulent leaves and a form of photosynthesis known as crassulacean acid metabolism (CAM), in which plants photosynthesize in the daytime and exchange gases during the cooler temperatures of the night. The blossoms of crassulas generally have five floral parts. Crassulaceae are usually herbaceous, though there are some subshrubs, and relatively few trees or aquatic plants. The Crassulaceae is a medium-sized, monophyletic family in the core eudicots clade, along with the order Saxifragales, whose diversity has made infrafamilial classification very difficult. The family includes approximately 1,400 species and 34–35 genera—depending on the circumscription of the genus ''Sedum''—distributed over three subfamilies. Members of the Crassulaceae are found worldwide, though ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madeira
Madeira ( ; ), officially the Autonomous Region of Madeira (), is an autonomous Regions of Portugal, autonomous region of Portugal. It is an archipelago situated in the North Atlantic Ocean, in the region of Macaronesia, just under north of the Canary Islands, Spain, west of the Morocco and southwest of mainland Portugal. Madeira sits on the African Plate, African Tectonic Plate, but is culturally, politically and ethnically associated with Europe, with its population predominantly descended from Portuguese settlers. Its population was 251,060 in 2021. The capital of Madeira is Funchal, on the main island's south coast. The archipelago includes the islands of Madeira Island, Madeira, Porto Santo Island, Porto Santo, and the Desertas Islands, Desertas, administered together with the separate archipelago of the Savage Islands. Roughly half of the population lives in Funchal. The region has political and administrative autonomy through the Autonomous Regions of Portugal#Const ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichome
Trichomes (; ) are fine outgrowths or appendages on plants, algae, lichens, and certain protists. They are of diverse structure and function. Examples are hairs, glandular hairs, scales, and papillae. A covering of any kind of hair on a plant is an indumentum, and the surface bearing them is said to be Leaf#Surface, pubescent. Algal trichomes Certain, usually filamentous, algae have the terminal cell (biology), cell produced into an elongate hair-like structure called a trichome. The same term is applied to such structures in some cyanobacteria, such as ''Spirulina (dietary supplement), Spirulina'' and ''Oscillatoria''. The trichomes of cyanobacteria may be unsheathed, as in ''Oscillatoria'', or sheathed, as in ''Calothrix''. These structures play an important role in preventing soil erosion, particularly in cold desert climates. The filamentous sheaths form a persistent sticky network that helps maintain soil structure. Plant trichomes Plant trichomes have many diff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calheta, Madeira
Calheta () is a municipality on the southwest coast of Madeira, Portugal. The population in 2011 was 11,521, in an area of 111.50 km2. History 
The origin of the areas name, are both related to the toponymy of ''Calheta'' (which means "small bay" in Portuguese, but "cal" also means "lime" and it relates to limestone): first, that there existed a small bay or cove, which already had this name, but secondly, that the area of the settlement was the off-port for sugar and collection of w ...
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Madeira Island
Madeira is a Portuguese island, and is the largest and most populous of the Madeira Archipelago. It has an area of , including Ilhéu de Agostinho, Ilhéu de São Lourenço, Ilhéu Mole (northwest). As of 2021, Madeira had a total population of 245,595. The island is the top of a massive submerged shield volcano that rises about from the floor of the Atlantic Ocean. The volcano formed atop an east–west rift in the oceanic crust along the African Plate, beginning during the Miocene epoch over 5 million years ago, continuing into the Pleistocene until about 700,000 years ago. This was followed by extensive erosion, producing two large amphitheatres open to south in the central part of the island. Volcanic activity later resumed, producing scoria cones and lava flows atop the older eroded shield. The most recent volcanic eruptions were on the west-central part of the island only 6,500 years ago, creating more cinder cones and lava flows. Madeira is the largest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aichryson
''Aichryson'' is a genus of 16 species of succulent, subtropical plants, native to the Canary Islands, Azores, and Madeira. The species of ''Aichryson'' are not frost-resistant. They are related to ''Sempervivum, Jovibarba, Greenovia, Aeonium'' and ''Monanthes'', readily seen in their similar flowers. The genus name comes from a contraction of the Greek "aei" (always) and "chrysos" (gold). Several species are cultivated as ornamental plants. The hybrid cultivar ''Aichryson'' × ''aizoides'' var. ''domesticum'' 'Variegatum' is a recipient of the Royal Horticultural Society's Award of Garden Merit. Taxonomy Recent phylogenetic studies of Crassulaceae indicate that ''Aichryson'' is closely related to ''Monanthes'' and ''Aeonium'' (both genera are also largely endemic to the Canary Islands). Two other genera of Crassulaceae that have many-parted (polymerous) flowers (''Sempervivum'' and '' Jovibarba'') are not closely related to the three Canary Island genera.Mort et al. (2002) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
