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Picconia
Picconia is a genus of two species of flowering plants in the family Oleaceae, found in the laurel forests habitat of Macaronesia. Description They are evergreen shrubs to trees with large, opposite, entire, shiny, ovoid leaves and numerous flowers. The fruit is a drupe. The flowers are small, white and fragrant, followed by one-seeded, olive-like green fruits, ripening to bluish-black. Picconia are native of open spots in the laurel forest of the Azores, Madeira and Canary Islands where they are found only in the humid to hyper-humid evergreen forests of the cloud belt.http://ec.europa.eu/environment/nature/natura2000/management/habitats/pdf/9360_Macaronesian_laurel_forests.pdf Tree species with laurel-like leaves are predominant, forming a dense canopy up to 40 m high that blocks out most light, resulting in scant vegetation in the understory. Most of these tree species in Africa are ancient paleoendemic species of the genera Laurus, Ocotea, Persea, and Picconia, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picconia
Picconia is a genus of two species of flowering plants in the family Oleaceae, found in the laurel forests habitat of Macaronesia. Description They are evergreen shrubs to trees with large, opposite, entire, shiny, ovoid leaves and numerous flowers. The fruit is a drupe. The flowers are small, white and fragrant, followed by one-seeded, olive-like green fruits, ripening to bluish-black. Picconia are native of open spots in the laurel forest of the Azores, Madeira and Canary Islands where they are found only in the humid to hyper-humid evergreen forests of the cloud belt.http://ec.europa.eu/environment/nature/natura2000/management/habitats/pdf/9360_Macaronesian_laurel_forests.pdf Tree species with laurel-like leaves are predominant, forming a dense canopy up to 40 m high that blocks out most light, resulting in scant vegetation in the understory. Most of these tree species in Africa are ancient paleoendemic species of the genera Laurus, Ocotea, Persea, and Picconia, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picconia Azorica
''Picconia azorica'', locally known as pau-branco, is a species of ''Picconia'' common to the majority of islands of the Portuguese archipelago of the Azores, where it is endemic. It can grow to a medium-sized tree, though it is usually found in the form of a shrub. It is threatened by habitat loss. Description The evergreen woody plant species is present in all the islands of the Azores, except Graciosa, usually in coastal and medium altitude forests from sea-level up to about high. Leaves are lanceolate or ovate, opposite and with entire margins. It flowers from March to July, producing small white flowers in axillary clusters.Martins et al. (2011), p.39 The fleshy fruits are dark blue drupes about long, similar to olive trees (both plants are in the Oleaceae family).Azores Flora''Picconia azorica'' Status The species is very popular in traditional/artesnal carpentry, for furniture construction and religious sanctuary. Since its colonization, the resources of the different i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picconia Excelsa
''Picconia excelsa'' is a species of '' Picconia'', endemic to Macaronesia, occurring on the Canary Islands (Spain) and Madeira (Portugal). Description ''Picconia excelsa'' is an evergreen shrub or small tree growing to 10 m tall, usually surpassing the height of the other species in the genus, '' Picconia azorica''. The leaves are opposite, 6–8 cm long, simple, with an entire margin, often curved down at the edges. The fruit is a black drupe 1–2 cm long.Flora de Canarias''Picconia excelsa'' It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... References {{Taxonbar, from=Q148728 excelsa Endemic flora of Macaronesia Flora of Madeira Flora of the Canary Islands Trees of Mediterranean climate Vulnerable plants Taxonomy art ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oleaceae Genera
Oleaceae, also known as the olive family, is a Taxonomy (biology), taxonomic family (biology), family of flowering plant, flowering shrubs, trees, and a few lianas in the Order (biology), order Lamiales, It presently comprises 28 genera, one of which is recently extinct.Peter S. Green. 2004. "Oleaceae". pages 296-306. In: Klaus Kubitzki (editor) and Joachim W. Kadereit (volume editor). ''The Families and Genera of Vascular Plants'' volume VII. Springer-Verlag: Berlin; Heidelberg, Germany. The extant genus, genera include ''Cartrema'', which was resurrected in 2012. The number of species in the Oleaceae is variously estimated in a wide range around 700. The flowers are often numerous and highly odoriferous.Vernon H. Heywood, Richard K. Brummitt, Ole Seberg, and Alastair Culham. ''Flowering Plant Families of the World''. Firefly Books: Ontario, Canada. . The family has a subcosmopolitan distribution, ranging from the subarctic to the southernmost parts of Africa, Australia, and Sout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laurel Forest
Laurel forest, also called laurisilva or laurissilva, is a type of subtropical forest found in areas with high humidity and relatively stable, mild temperatures. The forest is characterized by broadleaf tree species with evergreen, glossy and elongated leaves, known as "laurophyll" or "lauroid". Plants from the laurel family (Lauraceae) may or may not be present, depending on the location. Ecology Laurel and laurophyll forests have a patchy distribution in warm temperate regions, often occupying topographic refugia where the moisture from the ocean condenses so that it falls as rain or fog and soils have high moisture levels.Abstract at NASA – MODIS: Izquierdo, T; de las Heras, P; Marquez, A (2011). Vegetation indices changes in the cloud forest of La Gomera Island (Canary Islands) and their hydrological implications". ''Hyd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macaronesia
Macaronesia (Portuguese: ''Macaronésia,'' Spanish: ''Macaronesia'') is a collection of four volcanic archipelagos in the North Atlantic, off the coasts of Africa and Europe. Each archipelago is made up of a number of List of islands in the Atlantic Ocean, Atlantic oceanic islands, which are formed by seamounts on the ocean floor whose peaks have risen above the ocean's surface. Some of the Macaronesian islands belong to Portugal, some belong to Spain, and the rest belong to Cape Verde. Politically, the islands belonging to Portugal and Spain are part of the European Union. Geologically, Macaronesia is part of the African Plate, African tectonic plate. Some of its islands – the Azores – are situated along the edge of that plate at the point where it abuts the Eurasian Plate, Eurasian and North American Plate, North American plates. In one biogeography, biogeographical system, the Cape Verde archipelago is in the Afrotropical realm while the other three archipelagos are in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oleaceae
Oleaceae, also known as the olive family, is a taxonomic family of flowering shrubs, trees, and a few lianas in the order Lamiales, It presently comprises 28 genera, one of which is recently extinct.Peter S. Green. 2004. "Oleaceae". pages 296-306. In: Klaus Kubitzki (editor) and Joachim W. Kadereit (volume editor). ''The Families and Genera of Vascular Plants'' volume VII. Springer-Verlag: Berlin; Heidelberg, Germany. The extant genera include ''Cartrema'', which was resurrected in 2012. The number of species in the Oleaceae is variously estimated in a wide range around 700. The flowers are often numerous and highly odoriferous.Vernon H. Heywood, Richard K. Brummitt, Ole Seberg, and Alastair Culham. ''Flowering Plant Families of the World''. Firefly Books: Ontario, Canada. . The family has a subcosmopolitan distribution, ranging from the subarctic to the southernmost parts of Africa, Australia, and South America. Notable members include olive, ash, jasmine, and several popular or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleoendemic
Paleoendemism along with neoendemism is a possible subcategory of endemism. Paleoendemism refers to species that were formerly widespread but are now restricted to a smaller area. Neoendemism refers to species that have recently arisen, such as through divergence and reproductive isolation or through hybridization and polyploidy in plants. Etymology The first part of the word, paleo, comes from the Greek word ''palaiós, meaning "ancient".'' The second part of the word, ''endemism'' is from New Latin ''endēmicus'', from Greek ενδήμος, ''endēmos'', "native". ''Endēmos'' is formed of ''en'' meaning "in", and ''dēmos'' meaning "the people". Causes Changes in climate are thought to be the driving force in creating paleoendemic species, generally due to habitat loss. Regions where the climate has remained relatively stable form refugia which are more likely to be endemic hotspots today. This applies to both neoendemism and paleoendemism. However, paleoendemism differs as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Persea
''Persea'' is a genus of about 150 species of evergreen trees belonging to the laurel family, Lauraceae. The best-known member of the genus is the avocado, ''P. americana'', widely cultivated in subtropical regions for its large, edible fruit. Overview They are medium-size trees, tall at maturity. The leaves are simple, lanceolate to broad lanceolate, varying with species from long and broad, and arranged spirally or alternately on the stems. The flowers are in short panicles, with six small greenish-yellow perianth segments long, nine stamens and an ovary with a single embryo. The fruit is an oval or pear-shaped berry, with a fleshy outer covering surrounding the single seed; size is very variable among the species, from in e.g. ''P. borbonia'' and ''P. indica'', up to in some cultivars of ''P. americana''. Distribution and ecology The species of ''Persea'' have a disjunct distribution, with about 70 Neotropical species, ranging from Brazil and Chile in South America to C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ocotea
''Ocotea'' is a genus of flowering plants belonging to the family Lauraceae. Many are evergreen trees with lauroid leaves. There are over 520 species currently accepted within the genus, distributed mostly in tropical and subtropical areas of the Americas (around 300 species) including the Caribbean and West Indies, but also with some species in Africa, Madagascar and the Mascarene Islands. One species (''O. foetens'') is native to the Macaronesia (in Canary Islands and Madeira). The genus is suspected to be paraphyletic. Description They are trees or shrubs, occasionally with adventitious roots (''O. hartshorniana'', ''O. insularis''). Leaves simple, alternate, rarely opposite or whorled. The leaves are lauroid, they are commonly dark green glossy with sometimes brown on the underside and fragrant oil cells. The African and Madagascan species all have bisexual flowers (possessing both male and female parts), whereas many of the American species have flowers that a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laurus
''Laurus'' () is a genus of evergreen trees or shrubs belonging to the laurel family, Lauraceae. The genus contains three or more species, including the bay laurel or sweet bay, ''L. nobilis'', widely cultivated as an ornamental plant and a culinary herb. Description They are slow-growing, large, evergreen aromatic shrubs or trees with alternate, ovate leaves and insignificant yellow male and female flowers borne on separate plants (dioecious). They are frost-hardy but in temperate zones they require a sheltered spot in full sun that is not subject to prolonged freezing. Plants in pots can be moved into a cold greenhouse during the winter months. Species The number of species in the genus has not yet been fully resolved. The following may or may not be included. *''Laurus azorica'', Azores laurel, is native to the Azores. *''Laurus nobilis'', bay Laurel, true laurel, sweet bay, is used as an ornamental plant and culinary herb (one type of bay leaf) used in Mediterranean style ... [...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] |
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