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Mimetes Arboreus
''Mimetes arboreus'', or Kogelberg pagoda, is an evergreen, upright large shrub or small tree of 2–6 m (6½–20 ft) high in the family Proteaceae. It grows from a thick trunk with a smooth grey bark that branches at ½–1 m (1½–3 ft) above the ground. It has silvery, lance-shaped, pointy leaves of 5–8¼ cm (2.0–3.3 in) long and ¾–3¼ cm (0.3–1.3 in) wide, at an upward angle and overlapping each other. The inflorescences are set just below the top of the branches, are cylinder-shaped, 8–10 cm (3¼–4 in) in diameter, topped by a crest of more or less horizontal pinkish or reddish tinged leaves. It consists of several flower heads in the axils of pinkish orange leaves that form a hood shielding the underlying flower head. Each flower head contains eight to thirteen individual flowers, with bright red styles and grey silky perianth lobes. It is endemic to the Fynbos ecoregion of South Africa, being confined to the Kogelberg mountain range. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Patrick Rourke
John Patrick Rourke FMLS (born 26 March 1942, in Cape Town) is a South African botanist, who worked at the Kirstenbosch National Botanical Garden and became curator of the Compton Herbarium. He is a specialist in the flora of the Cape Floristic Region, in particular the family Proteaceae. Career Rourke studied at the University of Cape Town from 1960 to 1970, where he obtained his B.Sc., M.Sc. and Ph.D. He started working at Kirstenbosch from 1966, and succeeded Winsome Fanny Barker as curator of the Compton Herbarium in 1972. He published several revisions of Proteacean genera including ''Leucadendron'', ''Leucospermum'', ''Mimetes'', ''Vexatorella'', '' Sorocephalus'' and '' Spatalla''. During his career he collected approximately 2000 specimens of flora from the southwestern and southern Cape, Namaqualand and eastern Transvaal. In 1997 he was made foreign member of the Linnean Society of London. In 2003 Rourke was awarded the "Gold medal for Lifetime Preservation of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perianth
The perianth (perigonium, perigon or perigone in monocots) is the non-reproductive part of the flower, and structure that forms an envelope surrounding the sexual organs, consisting of the calyx (sepals) and the corolla (petals) or tepals when called a perigone. The term ''perianth'' is derived from Greek περί (, "around") and άνθος (, "flower"), while ''perigonium'' is derived from περί () and γόνος (, "seed, sex organs"). In the mosses and liverworts (Marchantiophyta), the perianth is the sterile tubelike tissue that surrounds the female reproductive structure (or developing sporophyte). Flowering plants In flowering plants, the perianth may be described as being either dichlamydeous/heterochlamydeous in which the calyx and corolla are clearly separate, or homochlamydeous, in which they are indistinguishable (and the sepals and petals are collectively referred to as tepals). When the perianth is in two whorls, it is described as biseriate. While the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wildfire
A wildfire, forest fire, bushfire, wildland fire or rural fire is an unplanned, uncontrolled and unpredictable fire in an area of Combustibility and flammability, combustible vegetation. Depending on the type of vegetation present, a wildfire may be more specifically identified as a bushfire(bushfires in Australia, in Australia), desert fire, grass fire, hill fire, peat fire, prairie fire, vegetation fire, or veld fire. Fire ecology, Some natural forest ecosystems depend on wildfire. Wildfires are distinct from beneficial human usage of wildland fire, called controlled burn, controlled burning, although controlled burns can turn into wildfires. Fossil charcoal indicates that wildfires began soon after the appearance of terrestrial plants approximately 419 million years ago during the Silurian period. Earth's carbon-rich vegetation, seasonally dry climates, atmospheric oxygen, and widespread lightning and volcanic ignitions create favorable conditions for fires. The occurre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Occupancy–abundance Relationship
In ecology, the occupancy–abundance (O–A) relationship is the relationship between the abundance of species and the size of their ranges within a region. This relationship is perhaps one of the most well-documented relationships in macroecology, and applies both intra- and interspecifically (within and among species). In most cases, the O–A relationship is a positive relationship.Gaston, K.J. 1996. The multiple forms of the interspecific abundance-distribution relationship. Oikos 75:211 – 220. Although an O–A relationship would be expected, given that a species colonizing a region must pass through the origin (zero abundance, zero occupancy) and could reach some theoretical maximum abundance and distribution (that is, occupancy and abundance can be expected to co-vary), the relationship described here is somewhat more substantial, in that observed changes in range are associated with greater-than-proportional changes in abundance. Although this relationship appears to be ... [...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] |
Betty's Bay
Betty's Bay is a small holiday town situated on the Overberg coast of South Africa's Western Cape province. It is located 100 km from Cape Town beneath the Kogelberg Mountains on the scenic R44 ocean drive between Pringle Bay and Kleinmond. This village stretches over 13 km along the coast. Tourism plays a large role in the town's economy due to its popularity with holiday makers from across the Western Cape and Cape Town in particular. During colonial times Betty's Bay was allegedly a favourite place for runaway slaves, and in 1912 Betty's Bay became a formal whaling station running up until the 1930s. Remains of the whaling station can still be seen at Stony Point. Bettys Bay is named after Betty Youlden, daughter of the first developer of the area Arthur Youlden. Betty's Bay contains the Harold Porter National Botanical Garden as well as an African penguin colony in the Betty's Bay Marine Protected Area, which is one of the two Penguin colonies in the area of the Western Cape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kogelberg Nature Reserve
Kogelberg Nature Reserve is a nature reserve of comprising the Kogelberg Mountain Range, to the east of Cape Town, South Africa. With about 1600 plant species, it contains a floral diversity per unit area that is greater than anywhere else in the world. Ecology Located in the Kogelberg Mountains, along the mountainous coast on the eastern edge of Cape Town, this nature reserve protects a significant portion of Kogelberg Sandstone Fynbos. Among the enormous range of plants in this local vegetation type are hundreds of species of Erica, a wide range of Protea species and a great many plant families which are endemic. The Kogelberg mountains are known as the heart of the Fynbos, and have a floral diversity per unit area that is greater than anywhere else in the world. In addition to its unique mountain fynbos, other ecosystems include wetlands, as well as the riparian vegetation of the Palmiet River, which is the most untouched in the south western Cape and are home to fore ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found 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 be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pringle Bay
Pringle Bay ( af, Pringlebaai) is a small, affluent coastal village in the Overberg region of the Western Cape, in South Africa. It is situated at the foot of Hangklip, on the opposite side of False Bay from Cape Point. The town and surrounds are part of the Kogelberg Biosphere Reserve, a UNESCO Heritage Site. The bay is named after Rear-Admiral Thomas Pringle, of the Royal Navy, who commanded the naval station at the Cape in the late 1790s. Situated between Betty's Bay and Gordon's Bay Gordon's Bay ( af, Gordonsbaai) is a harbour town in the Western Cape province of South Africa. It is included in the City of Cape Town metropolitan municipality as a suburb of the Helderberg region (formerly called Hottentots Holland). It is ..., many of the houses in the small community are only used as holiday houses by their owners. It is accessed by the R44, which connects it to the N2. Pringle Bay is well known for the Hangklip (hanging rock) that leans out to sea and marks the easter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Pearson Stokoe
Thomas may refer to: People * List of people with given name Thomas * Thomas (name) * Thomas (surname) * Saint Thomas (other) * Thomas Aquinas (1225–1274) Italian Dominican friar, philosopher, and Doctor of the Church * Thomas the Apostle * Thomas (bishop of the East Angles) (fl. 640s–650s), medieval Bishop of the East Angles * Thomas (Archdeacon of Barnstaple) (fl. 1203), Archdeacon of Barnstaple * Thomas, Count of Perche (1195–1217), Count of Perche * Thomas (bishop of Finland) (1248), first known Bishop of Finland * Thomas, Earl of Mar (1330–1377), 14th-century Earl, Aberdeen, Scotland Geography Places in the United States * Thomas, Illinois * Thomas, Indiana * Thomas, Oklahoma * Thomas, Oregon * Thomas, South Dakota * Thomas, Virginia * Thomas, Washington * Thomas, West Virginia * Thomas County (other) * Thomas Township (other) Elsewhere * Thomas Glacier (Greenland) Arts, entertainment, and media * ''Thomas'' (Burton novel) 1969 novel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovary (botany)
In the flowering plants, an ovary is a part of the female reproductive organ of the flower or gynoecium. Specifically, it is the part of the pistil which holds the ovule(s) and is located above or below or at the point of connection with the base of the petals and sepals. The pistil may be made up of one carpel or of several fused carpels (e.g. dicarpel or tricarpel), and therefore the ovary can contain part of one carpel or parts of several fused carpels. Above the ovary is the style and the stigma, which is where the pollen lands and germinates to grow down through the style to the ovary, and, for each individual pollen grain, to fertilize one individual ovule. Some wind pollinated flowers have much reduced and modified ovaries. Fruits A fruit is the mature, ripened ovary of a flower following double fertilization in an angiosperm. Because gymnosperms do not have an ovary but reproduce through double fertilization of unprotected ovules, they produce naked seeds that do not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pollen Presenter
A pollen-presenter is an area on the tip of the style in flowers of plants of the family Proteaceae on which the anthers release their pollen prior to anthesis. To ensure pollination, the style grows during anthesis, sticking out the pollen-presenter prominently, and so ensuring that the pollen easily contacts the bodies of potential pollination vectors such as bees, birds and nectarivorous mammals. The systematic depositing of pollen on the tip of the style implies the plants have some strategy to avoid excessive self-pollination Self-pollination is a form of pollination in which pollen from the same plant arrives at the Stigma (botany), stigma of a flower (in flowering plants) or at the ovule (in gymnosperms). There are two types of self-pollination: in autogamy, pollen i .... References * Plant anatomy + Proteaceae {{Botany-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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