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Isoplexis
{{Italic title ''Isoplexis'' is a section of four species of flowering plants within the genus ''Digitalis'' in the plantain family Plantaginaceae. The species of section ''Isoplexis'' differ from other plants in the genus ''Digitalis'' in that their monosymmetric (sometimes called zygomorphic) flowers have a distinctive large upper lip rather than large lower lip and the species are endemic to the Canary Islands (the species ''D. canariensis'', ''D. chalcantha'', and ''D. isabelliana'') and Madeira (''D. sceptrum''). Two ''Isoplexis'' species, ''D. canariensis'' and ''D. sceptrum'', were first described by Carl Linnaeus in 1753 as part of the genus ''Digitalis''. Since then the section has undergone several changes, the addition of two more species and more importantly being moved to a separate genus, under the genus name of ''Isoplexis'' or sometimes ''Callianassa'', back and forth many times (Lindley 1821, Loudon 1829, Bentham 1835, Webb 1845, Wetstein 1891, Himmelbaeur and Z ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isoplexis Canariensis 1
{{Italic title ''Isoplexis'' is a section of four species of flowering plants within the genus ''Digitalis'' in the plantain family Plantaginaceae. The species of section ''Isoplexis'' differ from other plants in the genus ''Digitalis'' in that their monosymmetric (sometimes called zygomorphic) flowers have a distinctive large upper lip rather than large lower lip and the species are endemic to the Canary Islands (the species ''D. canariensis'', ''D. chalcantha'', and ''D. isabelliana'') and Madeira (''D. sceptrum''). Two ''Isoplexis'' species, ''D. canariensis'' and ''D. sceptrum'', were first described by Carl Linnaeus in 1753 as part of the genus ''Digitalis''. Since then the section has undergone several changes, the addition of two more species and more importantly being moved to a separate genus, under the genus name of ''Isoplexis'' or sometimes ''Callianassa'', back and forth many times (Lindley 1821, Loudon 1829, Bentham 1835, Webb 1845, Wetstein 1891, Himmelbaeur and Z ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isoplexis Isabelliana
{{Italic title ''Isoplexis'' is a section of four species of flowering plants within the genus ''Digitalis'' in the plantain family Plantaginaceae. The species of section ''Isoplexis'' differ from other plants in the genus ''Digitalis'' in that their monosymmetric (sometimes called zygomorphic) flowers have a distinctive large upper lip rather than large lower lip and the species are endemic to the Canary Islands (the species ''D. canariensis'', ''D. chalcantha'', and ''D. isabelliana'') and Madeira (''D. sceptrum''). Two ''Isoplexis'' species, ''D. canariensis'' and ''D. sceptrum'', were first described by Carl Linnaeus in 1753 as part of the genus ''Digitalis''. Since then the section has undergone several changes, the addition of two more species and more importantly being moved to a separate genus, under the genus name of ''Isoplexis'' or sometimes ''Callianassa'', back and forth many times (Lindley 1821, Loudon 1829, Bentham 1835, Webb 1845, Wetstein 1891, Himmelbaeur and Z ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isoplexis Canariensis
''Digitalis canariensis'' is a member of the genus ''Digitalis''. Taxonomy This species is part of section ''Isoplexis'', which was temporarily accepted as an own genus. The synonym ''Isoplexis canariensis'' also continues to be used. In general, as of 2017, opinions concerning the taxonomic status of ''Isoplexis'' species differ depending on the source. Description Individuals of these species are small, evergreen plants growing into rounded shrubs up to 150 cm tall. The plant has lanceolate-ovoid leaves with toothed margins. The leaves are spirally arranged. The inflorescence is a cluster of orange-reddish, 3 cm large flowers with short petals and noticeable upper lip and lower lip. Bird pollination by the island populations of '' Phylloscopus'' species has been documented. The fruit is a capsule. ''Digitalis canariensis'' contains cardenolids (cardiac glycosids),Studer, Pavanaram et al.: ''Die Glykoside der Blätter von ''Digitalis canariensis'' L. 1. Mitteilung'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digitalis
''Digitalis'' ( or ) is a genus of about 20 species of herbaceous perennial plants, shrubs, and biennials, commonly called foxgloves. ''Digitalis'' is native to Europe, western Asia, and northwestern Africa. The flowers are tubular in shape, produced on a tall spike, and vary in colour with species, from purple to pink, white, and yellow. The scientific name means "finger". The genus was traditionally placed in the figwort family, Scrophulariaceae, but phylogenetic research led taxonomists to move it to the Veronicaceae in 2001. More recent phylogenetic work has placed it in the much enlarged family Plantaginaceae. The best-known species is the common foxglove, ''Digitalis purpurea''. This biennial is often grown as an ornamental plant due to its vivid flowers which range in colour from various purple tints through pink and purely white. The flowers can also possess various marks and spottings. Other garden-worthy species include ''D. ferruginea'', ''D. grandiflora'', ''D. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canarina
''Canarina'' is a genus of flowering plants within the family Campanulaceae. They are herbaceous perennial vines with bell-shaped flowers. The best known species is ''Canarina canariensis'' from the laurel forests of the Canary Islands which is grown as an ornamental plant. ''C. canariensis'' is one of a group of unrelated Canarian plants that appear to be adapted for bird pollination, including the members of the genera ''Isoplexis'' and '' Lotus''. It was once thought that the original pollinators of these plants were sunbirds which had become extinct on the Canary Islands, explaining why some of these species are rare and considered endangered (Vogel 1954; Vogel et al. 1984; Olesen 1985; Valido et al. 2004). However more recent work has shown that these plants are adequately pollinated by non-specialist flower visiting birds, particularly the Canary Islands chiffchaff (''Phylloscopus canariensis'') and the Canary Island spectacled warbler (''Sylvia conspicillata orbitalis'') ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canary Islands
The Canary Islands (; es, Canarias, ), also known informally as the Canaries, are a Spanish autonomous community and archipelago in the Atlantic Ocean, in Macaronesia. At their closest point to the African mainland, they are west of Morocco. They are the southernmost of the autonomous communities of Spain. The islands have a population of 2.2 million people and they are the most populous special territory of the European Union. The seven main islands are (from largest to smallest in area) Tenerife, Fuerteventura, Gran Canaria, Lanzarote, La Palma, La Gomera, and El Hierro. The archipelago includes many smaller islands and islets, including La Graciosa, Alegranza, Isla de Lobos, Montaña Clara, Roque del Oeste, and Roque del Este. It also includes a number of rocks, including those of Salmor, Fasnia, Bonanza, Garachico, and Anaga. In ancient times, the island chain was often referred to as "the Fortunate Isles". The Canary Islands are the southernmost region of Spain, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexose
In chemistry, a hexose is a monosaccharide (simple sugar) with six carbon atoms. The chemical formula for all hexoses is C6H12O6, and their molecular weight is 180.156 g/mol. Hexoses exist in two forms, open-chain or cyclic, that easily convert into each other in aqueous solutions. The open-chain form of a hexose, which usually is favored in solutions, has the general structure H–(CHOH)''n''−1–C(=O)–(CHOH)4−''n''–H, where ''n'' is 1, 2, or 3. Namely, five of the carbons have one hydroxyl functional group (–OH) each, connected by a single bond, and one has an oxo group (=O), forming a carbonyl group (C=O). The remaining bonds of the carbon atoms are satisfied by seven hydrogen atoms. The carbons are commonly numbered 1 to 6 starting at the end closest to the carbonyl. Hexoses are extremely important in biochemistry, both as isolated molecules (such as glucose and fructose) and as building blocks of other compounds such as starch, cellulose, and glycosides. Hexose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sylvia Melanocephala
The Sardinian warbler (''Curruca melanocephala'') is a common and widespread typical warbler from the Mediterranean region. Like most ''Curruca'' species, it has distinct male and female plumages. The adult male has a grey back, whitish underparts, black head, white throat and red eyes. Plumages are somewhat variable even in the same locality, with the intensity of a reddish hue on upper- and/or underside that varies from absent to (in some subspecies) pronounced. The female is mainly brown above and buff below, with a grey head. The Sardinian warbler's song is fast and rattling, and is very characteristic of the Mediterranean areas where this bird breeds. Taxonomy and systematics The first formal description of the Sardinian warbler was by the German naturalist Johann Friedrich Gmelin in 1789 in the 13th edition of the ''Systema naturae''. He coined the binomial name ''Motacilla melanocephala''. The previous genus ''Sylvia'' was introduced in 1769 by the Italian naturalist Giova ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canary Islands Chiffchaff
The Canary Islands chiffchaff (''Phylloscopus canariensis'') is a species of leaf warbler endemic to the Canary Islands, Spain. Sometimes the English name is spelled Canary Island chiffchaff. Taxonomy Previously the Canary Island chiffchaff was considered as a subspecies of the common chiffchaff (''Phylloscopus collybita''). Now it is recognised as a separate species under the name ''Phylloscopus canariensis''. Subspecies There are two recognised subspecies but the Lanzarote subspecies is probably extinct; they are: * Western Canary Islands chiffchaff (''Phylloscopus canariensis canariensis''): western Canary Islands: El Hierro, La Palma, La Gomera, Tenerife, and Gran Canaria * †Eastern Canary Islands chiffchaff (''Phylloscopus canariensis exsul''): eastern Canary Islands: Lanzarote and possibly Fuerteventura. Description The Canary Islands chiffchaff is similar to the common chiffchaff and the Iberian chiffchaff but compared to the common chiffchaff it has a longer b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered Species
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and invasive species. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration. Human activity is a significant cause in causing some species to become endangered. Conservation status The conservation status of a species indicates the likelihood that it will become extinct. Multiple factors are considered when assessing the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sunbird
Sunbirds and spiderhunters make up the family Nectariniidae of passerine birds. They are small, slender passerines from the Old World, usually with downward-curved bills. Many are brightly coloured, often with iridescent feathers, particularly in the males. Many species also have especially long tail feathers. Their range extends through most of Africa to the Middle East, South Asia, South-east Asia and southern China, to Indonesia, New Guinea and northern Australia. Species diversity is highest in equatorial regions. There are 145 species in 16 genera. Most sunbirds feed largely on nectar, but will also eat insects and spiders, especially when feeding their young. Flowers that prevent access to their nectar because of their shape (for example, very long and narrow flowers) are simply punctured at the base near the nectaries, from which the birds sip the nectar. Fruit is also part of the diet of some species. Their flight is fast and direct, thanks to their short wings. The sun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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