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Oxera Sulfurea
''Oxera'' is a genus of flowering plants in the family Lamiaceae native to Vanuatu and New Caledonia in the western Pacific. Description Species of ''Oxera'' show a variety of growth forms, including lianas, shrubs and trees. The leaves are simple, and are petiolate (on short stalks), except in '' O. sessilifolia'', with entire or occasionally sinuate (wavy) edges. The inflorescences are loose thyrses of flowers, growing from leaf axils (axillary) or directly from the stem (cauliflory). The flowers are large, conspicuous and bisexual; the calyx is actinomorphic (rotationally symmetrical), but the corolla is zygomorphic, sometimes strongly so. Although some species have four stamens in each flower, they are usually reduced in number with two stamens, usually the posterior pair, forming staminodes instead. Distribution Twenty of the twenty-one species are found on the island of Grande Terre (the main island of New Caledonia). Three species occur on the adjacent island of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stamen
The stamen (: stamina or stamens) is a part consisting of the male reproductive organs of a flower. Collectively, the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filament and an anther which contains sporangium, microsporangia. Most commonly, anthers are two-lobed (each lobe is termed a locule) and are attached to the filament either at the base or in the middle area of the anther. The sterile (i.e. nonreproductive) tissue between the lobes is called the Connective (botany), connective, an extension of the filament containing conducting strands. It can be seen as an extension on the dorsal side of the anther. A pollen grain develops from a microspore in the microsporangium and contains the male gametophyte. The size of anthers differs greatly, from a tiny fraction of a millimeter in ''Wolfia'' spp up to five inches (13 centimeters) in ''Canna iridiflora'' and ''Strelitzia nicolai''. The stamens in a flower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cutting (plant)
A plant cutting is a piece of a plant that is used in horticulture for vegetative reproduction, vegetative (asexual) plant propagation, propagation. A piece of the Plant stem, stem or root of the source plant is placed in a suitable medium such as moist soil. If the conditions are suitable, the plant piece will begin to grow as a new plant independent of the Mother plant, parent, a process known as striking. A stem cutting produces new roots, and a root cutting produces new stems. Some plants can be grown from leaf pieces, called leaf cuttings, which produce both stems and roots. The scions used in grafting are also called cuttings. Propagating plants from cuttings is an ancient form of cloning. There are several advantages of cuttings, mainly that the produced offspring are practically clones of their parent plants. If a plant has favorable traits, it can continue to pass down its advantageous genetic information to its offspring. This is especially economically advantageous as i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Propagation
Plant propagation is the process by which new plants grow from various sources, including seeds, Cutting (plant), cuttings, and other plant parts. Plant propagation can refer to both man-made and natural processes. Propagation typically occurs as a step in the overall cycle of plant growth. For seeds, it happens after ripening and Seed dispersal, dispersal; for vegetative parts, it happens after detachment or pruning; for asexually-reproducing plants, such as strawberry, it happens as the new plant develops from existing parts. Countless plants are propagated each day in horticulture and agriculture. Plant propagation is vital to agriculture and horticulture, not just for human food production but also for forest and fibre crops, as well as traditional and herbal medicine. It is also important for plant breeding. Sexual propagation Seeds and spores can be used for reproduction (e.g. sowing). Seeds are typically produced from Plant sexuality, sexual reproduction within a spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maewo
Maewo (, in English as and formerly ''Aurora Island'') is an island in Vanuatu in Penama province, 105 km to the east of Espiritu Santo. It is 47 km long, and 6 km wide, with an area of 269 km2. Its highest point is 795 m above sea level. In 2009 the island had a population of almost 3,600. Maewo is covered with dense vegetation: tropical forests in which banyan trees grow. Name The name ''Maewo'' is thought to have come from Mota, Raga, or Ambae as an attempt to transcribe the pronunciation . In the local languages it is spelled as ''N̄waewo'' . Other names for the island include Mwerlap ''N̄wēw'' and Mwotlap ''Am̄ew'' (with the locative prefix ''a-''). All of these terms are thought to have come from Proto-North-Central Vanuatu (and Proto-Torres–Banks) ''*mʷaewo''. History First recorded sighting of Maewo Island by Europeans was by the Spanish expedition of Pedro Fernández de Quirós at the end of April 1606.Brand, Donald D. ''The P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentecost Island
Pentecost is one of the 83 islands that make up the Oceania, South Pacific nation of Vanuatu. It lies due north of capital Port Vila. Pentecost is known as in French language, French and in Bislama. The island was known in its native languages by names such as ''Vanu Aroaroa'', although these names are not in common use today. Pentecost has also been referred to as ''Raga'' or ''Araga'', a tribal name that originated in the north but is now widely applied to the whole island. In old sources, it is occasionally referred to as Whitsuntide Island. Geography Pentecost is a lush, mountainous island which stretches north to south over some . It has an area of . The mountain range, of which the highest is Mount Vulmat (), marks the dividing line between the humid, rainy eastern coast and the more temperate western coast. The coastal plains, cross-cut by small torrents, are generally very green and ideally suited for plantations and livestock. The climate on Pentecost is humid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Cultivation
Agriculture encompasses crop and livestock production, aquaculture, and forestry for food and non-food products. Agriculture was a key factor in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in the cities. While humans started gathering grains at least 105,000 years ago, nascent farmers only began planting them around 11,500 years ago. Sheep, goats, pigs, and cattle were domesticated around 10,000 years ago. Plants were independently cultivated in at least 11 regions of the world. In the 20th century, industrial agriculture based on large-scale monocultures came to dominate agricultural output. , small farms produce about one-third of the world's food, but large farms are prevalent. The largest 1% of farms in the world are greater than and operate more than 70% of the world's farmland. Nearly 40% of agricultural land is found on farms larger than . However, five of every six farms i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxera Vanuatuensis
''Oxera'' is a genus of flowering plants in the family Lamiaceae native to Vanuatu and New Caledonia in the western Pacific. Description Species of ''Oxera'' show a variety of growth forms, including lianas, shrubs and trees. The leaves are simple, and are petiolate (on short stalks), except in ''Oxera sessilifolia, O. sessilifolia'', with entire or occasionally sinuate (wavy) edges. The inflorescences are loose thyrses of flowers, growing from leaf axils (axillary) or directly from the stem (cauliflory). The flowers are large, conspicuous and bisexual; the calyx (botany), calyx is actinomorphic (rotationally symmetrical), but the corolla (botany), corolla is zygomorphic, sometimes strongly so. Although some species have four stamens in each flower, they are usually reduced in number with two stamens, usually the posterior pair, forming staminodes instead. Distribution Twenty of the twenty-one species are found on the island of Grande Terre (New Caledonia), Grande Terre (th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Introduced Species
An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there by human activity, directly or indirectly, and either deliberately or accidentally. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are considered naturalized. The process of human-caused introduction is distinguished from biological colonization, in which species spread to new areas through "natural" (non-human) means such as storms and rafting. The Latin expression neobiota captures the characteristic that these species are ''new'' biota to their environment in terms of established biological network (e.g. food web) relationships. Neobiota can further be divided into neozoa (also: neozoons, sing. neozoon, i.e. animals) and ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loyalty Islands
Loyalty Islands Province (, ) is one of the three top-level administrative subdivisions of New Caledonia. It encompasses the Loyalty Islands () archipelago in the Pacific Ocean, located northeast of the New Caledonian mainland of Grande Terre. The provincial government seat is at Lifou. The Loyalty Islands are a '' collectivité territoriale'' of France. The province's 2019 population was approximately 18,353 inhabitants living on almost . The native inhabitants are Melanesians who speak various Kanak languages and Polynesians who speak the Fagauvea language. History The first Western contact on record is attributed to British Captain William Raven of the whaler ''Britannia'', who was on his way in 1793 from Norfolk Island to Batavia (now called Jakarta). It is very likely, however, that the discovery and name originated with officials on the London ship ''Loyalty'', which was on a Pacific Ocean trading voyage from 1789 to 1790. The French Government demanded the removal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lifou
Lifou () is a communes of France, commune of France in the Loyalty Islands Province of New Caledonia, Pacific Ocean. Geography Lifou is made up of Lifou Island, the largest and most heavily populated of the Loyalty Islands, its smaller neighbour Tiga Island, and several uninhabited islets in between these two. All these islands lie among the Loyalty Islands, northeast of New Caledonia, New Caledonia's mainland. At , Lifou Island is the largest atoll in the world. The town of Wé, on Lifou Island, is the administrative centre of the commune of Lifou as well as the provincial seat of the Loyalty Islands Province. Climate Lifou has a tropical rainforest climate (Köppen climate classification: ''Af'') that closely borders a tropical monsoon climate (Köppen climate classification: ''Am''). The average annual temperature in Lifou is . The average annual rainfall is with March as the wettest month. The temperatures are highest on average in February, at around , and lowest in Aug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
