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Twayblade
''Neottia'' is a genus of Orchidaceae, orchids. The genus now includes the former genus ''Listera'', commonly known as twayblades referring to the single pair of opposite leaves at the base of the flowering stem. The genus is native to Temperate climate, temperate, subarctic and arctic regions across most of Europe, northern Asia (Siberia, China, the Himalayas, Central Asia, etc), and North America, with a few species extending into subtropical regions in the Mediterranean, Indochina, the southeastern United States, etc.Pridgeon, A.M., Cribb, P.J., Chase, M.C. & Rasmussen, F.N. (2006). Epidendroideae (Part One). Genera Orchidacearum 4: 1-672. Oxford University Press, New York, Oxford. ''Neottia'' produces a raceme, racemose inflorescences with flowers in shades of green or dull pink through to maroon and purple. The lip of each flower is prominently forked or two-lobed. Some species (those which were previously the only members of the genus ''Neottia'' in the strict sense, such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neottia Alternifolia
''Neottia'' is a genus of orchids. The genus now includes the former genus ''Listera'', commonly known as twayblades referring to the single pair of opposite leaves at the base of the flowering stem. The genus is native to temperate, subarctic and arctic regions across most of Europe, northern Asia (Siberia, China, the Himalayas, Central Asia, etc), and North America, with a few species extending into subtropical regions in the Mediterranean, Indochina, the southeastern United States, etc.Pridgeon, A.M., Cribb, P.J., Chase, M.C. & Rasmussen, F.N. (2006). Epidendroideae (Part One). Genera Orchidacearum 4: 1-672. Oxford University Press, New York, Oxford. ''Neottia'' produces a racemose inflorescences with flowers in shades of green or dull pink through to maroon and purple. The lip of each flower is prominently forked or two-lobed. Some species (those which were previously the only members of the genus ''Neottia'' in the strict sense, such as the bird's-nest orchid, ''Neotti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neottia Nidus-avis Plants
''Neottia'' is a genus of orchids. The genus now includes the former genus ''Listera'', commonly known as twayblades referring to the single pair of opposite leaves at the base of the flowering stem. The genus is native to temperate, subarctic and arctic regions across most of Europe, northern Asia (Siberia, China, the Himalayas, Central Asia, etc), and North America, with a few species extending into subtropical regions in the Mediterranean, Indochina, the southeastern United States, etc.Pridgeon, A.M., Cribb, P.J., Chase, M.C. & Rasmussen, F.N. (2006). Epidendroideae (Part One). Genera Orchidacearum 4: 1-672. Oxford University Press, New York, Oxford. ''Neottia'' produces a racemose inflorescences with flowers in shades of green or dull pink through to maroon and purple. The lip of each flower is prominently forked or two-lobed. Some species (those which were previously the only members of the genus ''Neottia'' in the strict sense, such as the bird's-nest orchid, ''Neotti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neottia Acuminata
''Neottia'' is a genus of orchids. The genus now includes the former genus ''Listera'', commonly known as twayblades referring to the single pair of opposite leaves at the base of the flowering stem. The genus is native to temperate, subarctic and arctic regions across most of Europe, northern Asia (Siberia, China, the Himalayas, Central Asia, etc), and North America, with a few species extending into subtropical regions in the Mediterranean, Indochina, the southeastern United States, etc.Pridgeon, A.M., Cribb, P.J., Chase, M.C. & Rasmussen, F.N. (2006). Epidendroideae (Part One). Genera Orchidacearum 4: 1-672. Oxford University Press, New York, Oxford. ''Neottia'' produces a racemose inflorescences with flowers in shades of green or dull pink through to maroon and purple. The lip of each flower is prominently forked or two-lobed. Some species (those which were previously the only members of the genus ''Neottia'' in the strict sense, such as the bird's-nest orchid, ''Neotti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neottia Ovata
''Neottia ovata'' (formerly ''Listera ovata''), the common twayblade or eggleaf twayblade, is a terrestrial orchid widespread across much of Europe and Asia Description The flowering stems are typically tall, occasionally up to . There are two large opposite basal leaves, long. A variable number of flowers is borne on the stems, usually more than 15 but less than 100. The flowers are small and yellowish-green in colour. The sepals and the two side petals form a fairly open hood, 5–6 mm (0.2 in) long; the labellum or lip (the central petal) is long and is divided at the end into two lobes. Due to its slender profile, small flowers and green colour this species can be hard to spot. Distribution and habitat Found across much of Europe including the British Isles, as well as Siberia, Central Asia, Southwest Asia and the Himalayas. It has been introduced into Ontario, Canada, where it has been called the eggleaf twayblade. (as ''Listera ovata'') ''Neottia ovata'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neottia Auriculata
''Neottia auriculata'' (syn. ''Listera auriculata''), the auricled twayblade, (as ''Listera auriculata'') is a species of terrestrial orchid found in northeastern North America (Labrador, New Brunswick and Maine west to Manitoba and Minnesota. Description ''N. auriculata'' when mature, has two ovate, sessile leaves that are paired on the stem but arranged oppositely. It has small pale-green flowers with three sepals and three petals, the lowest petal is modified into a wider lip - which is divided from one-fourth to one-third its length. Distribution and habitat ''N. auriculata'' is a rare orchid species, which was in 1975 proposed as a threatened species in the US, but subsequent surveys found that it existed in greater abundance than initially thought. In the Great lakes region it occupies a very specific habitat, which has sandy soils just about the high water line of rivers that enter lake Superior Lake Superior in central North America is the largest freshwater lake ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neottia Cordata
''Neottia cordata'', the lesser twayblade or heartleaf twayblade, is an orchid of upland bogs and mires that rarely exceeds in height. It was formerly placed in the genus '' Listera'', but molecular phylogenetic studies have shown that ''Neottia nidus-avis'', the bird's-nest orchid, evolved within the same group., p. 864 It is never very common but may be frequently overlooked because of its small size and a tendency to grow underneath heather on sphagnum moss. The single erect flower-stem is often tinged red and is clasped near the base by a pair or ovate- orbicular glossy green leaves. The small flowers which look deceptively simple in structure for an orchid, are purple-green in colour with a somewhat swollen calyx. Distribution It has a circumpolar distribution being found in Europe, Asia and large parts of North America. In the United Kingdom its distribution is largely western and northern, becoming most common in the western Highlands of Scotland, Snowdonia in Wales, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neottia Nidus-avis
''Neottia nidus-avis'', the bird's-nest orchid, is a non-photosynthesis, photosynthetic orchid, native to Europe, Russia and some parts of the Middle East. Description ''Neottia nidus-avis'' grows to tall and each shoot can carry up to 60 flowers. Plants are not in any part green, deriving all their nutrition from a mycorrhizal fungus in the soil/litter, which in turn derives nutrition from the roots of trees. Plants are generally beige-brown, though sometimes yellowish or white forms are discovered. The flower labellum splits and strongly diverges at its lower end. This species of orchid can be hard to spot, being camouflage, camouflaged against the leaf litter. Across Europe, this species flowers May-June. Distribution and habitat It is widespread across most of Europe, occurring also in Algeria, Tunisia, western Siberia, the Caucasus, Iran and Turkey. In the British Isles, ''Neottia nidus-avis'' is found in shady woodland, especially Fagus sylvatica, beech, on basic soil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opposite Leaves
In botany, phyllotaxis () or phyllotaxy is the arrangement of leaves on a plant stem. Phyllotactic spirals form a distinctive class of patterns in nature. Leaf arrangement The basic arrangements of leaves on a stem are opposite and alternate (also known as spiral). Leaves may also be whorled if several leaves arise, or appear to arise, from the same level (at the same node) on a stem. With an opposite leaf arrangement, two leaves arise from the stem at the same level (at the same node), on opposite sides of the stem. An opposite leaf pair can be thought of as a whorl of two leaves. With an alternate (spiral) pattern, each leaf arises at a different point (node) on the stem. Distichous phyllotaxis, also called "two-ranked leaf arrangement" is a special case of either opposite or alternate leaf arrangement where the leaves on a stem are arranged in two vertical columns on opposite sides of the stem. Examples include various bulbous plants such as ''Boophone''. It also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raceme
A raceme ( or ) or racemoid is an unbranched, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are produced as the shoot grows in height, with no predetermined growth limit. Examples of racemes occur on mustard (genus ''Brassica'') and radish (genus ''Raphanus'') plants. Definition A ''raceme'' or ''racemoid'' is an unbranched, indeterminate type of inflorescence bearing pedicellate flowers (flowers having short floral stalks called ''pedicels'') along its axis. In botany, an ''axis'' means a shoot, in this case one bearing the flowers. In indeterminate inflorescence-like racemes, the oldest flowers grow close to the base and new flowers are produced as the shoot grows in height, with no predetermined growth limit. A plant that flowers on a showy raceme may have this reflected in its scientific name, e.g. the species ''Cimicifuga racemosa''. A compou ... [...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 at Kew ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Brown (botanist, Born 1773)
Robert Brown (21 December 1773 – 10 June 1858) was a Scottish botanist and paleobotanist who made important contributions to botany largely through his pioneering use of the microscope. His contributions include one of the earliest detailed descriptions of the cell nucleus and cytoplasmic streaming; the observation of Brownian motion; early work on plant pollination and fertilisation, including being the first to recognise the fundamental difference between gymnosperms and angiosperms; and some of the earliest studies in palynology. He also made numerous contributions to plant taxonomy, notably erecting a number of plant families that are still accepted today; and numerous Australian plant genera and species, the fruit of his exploration of that continent with Matthew Flinders. Early life Robert Brown was born in Montrose on 21 December 1773, in a house that existed on the site where Montrose Library currently stands. He was the son of James Brown, a minister in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Phylogenetics
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to determine the processes by which diversity among species has been achieved. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree. Molecular phylogenetics is one aspect of molecular systematics, a broader term that also includes the use of molecular data in taxonomy and biogeography. Molecular phylogenetics and molecular evolution correlate. Molecular evolution is the process of selective changes (mutations) at a molecular level (genes, proteins, etc.) throughout various branches in the tree of life (evolution). Molecular phylogenetics makes inferences of the evolutionary relationships that arise due to molecular evolution and results in the construction of a phylogenetic tree. History The theoretical frame ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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