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Ourisia Crosbyi
''Ourisia crosbyi'' is a species of flowering plant in the family Plantaginaceae that is endemic to the South Island of New Zealand. Leonard Cockayne described ''O. crosbyi'' in 1915. Plants of this species of New Zealand foxglove are showy, perennial, large-leaved, tufted, rhizomatous herbs that are hairy with non-glandular hairs. They have serrate, ovate, hairy leaves. The flowers are in whorls in each node, with a regular calyx, and a large, white irregular corolla. The corolla tube is yellow with three lines of yellow hairs inside. It is found in montane forests and is listed as Not Threatened. Taxonomy ''Ourisia crosbyi'' Cockayne is in the plant family Plantaginaceae. Leonard Cockayne described ''O. crosbyi'' in 1915. The type material was collected by Cockayne in Longwood Range, Southland, New Zealand. The lectotype was designated by Heidi Meudt and is housed at the Manaaki Whenua - Landcare Research Allan Herbarium. ''Ourisia crosbyi'' plants are large, showy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stewart Island
Stewart Island ( mi, Rakiura, ' glowing skies', officially Stewart Island / Rakiura) is New Zealand's third-largest island, located south of the South Island, across the Foveaux Strait. It is a roughly triangular island with a total land area of . Its coastline is deeply creased by Paterson Inlet (east), Port Pegasus (south), and Mason Bay (west). The island is generally hilly (rising to at Mount Anglem) and densely forested. Flightless birds, including penguins, thrive because there are few introduced predators. Almost all the island is owned by the New Zealand government and over 80 per cent of the island is set aside as the Rakiura National Park. Stewart Island's economy depends on fishing and summer tourism. Its permanent population was recorded at 408 people in the 2018 census, most of whom live in the settlement of Oban on the eastern side of the island. Ferries connect the settlement to Bluff in the South Island. Stewart Island/Rakiura is part of the Southland Dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Didynamous
The stamen (: stamina or stamens) is the pollen-producing reproductive organ 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 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 tissue between the lobes is called the 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 are collectively called the androecium. The androecium can con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amplified Fragment Length Polymorphism
AFLP-PCR or just AFLP is a PCR-based tool used in genetics research, DNA fingerprinting, and in the practice of genetic engineering. Developed in the early 1990s by KeyGene, AFLP uses restriction enzymes to digest genomic DNA, followed by ligation of adaptors to the sticky ends of the restriction fragments. A subset of the restriction fragments is then selected to be amplified. This selection is achieved by using primers complementary to the adaptor sequence, the restriction site sequence and a few nucleotides inside the restriction site fragments (as described in detail below). The amplified fragments are separated and visualized on denaturing on agarose gel electrophoresis , either through autoradiography or fluorescence methodologies, or via automated capillary sequencing instruments. Although AFLP should not be used as an acronym, it is commonly referred to as "Amplified fragment length polymorphism". However, the resulting data are not scored as length polymorphisms, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ourisia Calycina
''Ourisia calycina'' is a species of flowering plant in the family Plantaginaceae that is endemic to the South Island of New Zealand and was described by William Colenso in 1889. Plants of this species are showy, perennial, large-leaved, tufted, rhizomatous herbs that are mostly glabrous (hairless) or with some non-glandular hairs. They have broadly ovate leaves. The flowers are in whorls in each node, with a regular calyx, a large, white irregular corolla, and fruits up to 1 cm long. The corolla tube is yellow with three lines of yellow hairs inside. It is listed as Not Threatened. Taxonomy ''Ourisia calycina'' Colenso is in the plant family Plantaginaceae. William Colenso described ''O. calycina'' in 1889. The type material was collected by William Colenso from the Waimakariri River near Bealey, South Island, New Zealand. The holotype is housed at the herbarium at the Royal Botanical Gardens, Kew (K000979335). ''Ourisia calycina'' plants are large and showy perennial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ourisia Vulcanica
''Ourisia vulcanica'' is a species of flowering plant in the family Plantaginaceae that is endemic to the North Island of New Zealand. Lucy Moore (botanist), Lucy Moore described ''O. vulcanica'' in 1961. Plants of this species of New Zealand foxglove are showy, Perennial plant, perennial, rhizomatous herbs that can be hairy with non-glandular hairs or sometimes glabrous. They have crenate, ovate leaves. The flowers are usually in pairs in each node, with an irregular calyx, and a white irregular corolla. The calyx and floral bracts have non-glandular hairs. The corolla tube is yellow with three lines of hairs and a ring of hairs inside. It is only found in the Volcanic Plateau area and is listed as At Risk - Naturally Uncommon. Taxonomy ''Ourisia vulcanica'' L.B.Moore is in the plant family Plantaginaceae. Lucy Moore (botanist), Lucy Moore described ''O. vulcanica'' in the ''Flora of New Zealand'' in 1961. The type material was collected by Anthony Peter Druce, Anthony Druce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chloroplast DNA
Chloroplast DNA (cpDNA) is the DNA located in chloroplasts, which are photosynthetic organelles located within the cells of some eukaryotic organisms. Chloroplasts, like other types of plastid, contain a genome separate from that in the cell nucleus. The existence of chloroplast DNA was identified biochemically in 1959, and confirmed by electron microscopy in 1962. The discoveries that the chloroplast contains ribosomes and performs protein synthesis revealed that the chloroplast is genetically semi-autonomous. The first complete chloroplast genome sequences were published in 1986, ''Nicotiana tabacum'' (tobacco) by Sugiura and colleagues and ''Marchantia polymorpha'' (liverwort) by Ozeki et al. Since then, a great number of chloroplast DNAs from various species have been sequenced. Molecular structure Chloroplast DNAs are circular, and are typically 120,000–170,000 base pairs long. They can have a contour length of around 30–60 micrometers, and have a mass of about 80 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ribosomal DNA
Ribosomal DNA (rDNA) is a DNA sequence that codes for ribosomal RNA. These sequences regulate transcription initiation and amplification, and contain both transcribed and non-transcribed spacer segments. In the human genome there are 5 chromosomes with nucleolus organizer regions: the acrocentric chromosomes 13 (RNR1), 14 ( RNR2), 15 ( RNR3), 21 (RNR4) and 22 (RNR5). The genes that are responsible for encoding the various sub-units of rRNA are located across multiple chromosomes in humans. But the genes that encode for rRNA are highly conserved across the domains, with only the copy numbers involved for the genes having varying numbers per species. In Bacteria, Archaea, and chloroplasts the rRNA is composed of different (smaller) units, the large (23S) ribosomal RNA, 16S ribosomal RNA and 5S rRNA. The 16S rRNA is widely used for phylogenetic studies. Eukaryotes The rRNA transcribed from the approximately 600 rDNA repeats forms the most abundant section of RNA found in cells ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylogenetics
In biology, phylogenetics (; from Greek language, Greek wikt:φυλή, φυλή/wikt:φῦλον, φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups of organisms. These relationships are determined by Computational phylogenetics, phylogenetic inference methods that focus on observed heritable traits, such as DNA sequences, Protein, protein Amino acid, amino acid sequences, or Morphology (biology), morphology. The result of such an analysis is a phylogenetic tree—a diagram containing a hypothesis of relationships that reflects the evolutionary history of a group of organisms. The tips of a phylogenetic tree can be living taxa or fossils, and represent the "end" or the present time in an evolutionary lineage. A phylogenetic diagram can be rooted or unrooted. A rooted tree diagram indicates the hypothetical common ancestor of the tree. An un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nothofagus
''Nothofagus'', also known as the southern beeches, is a genus of 43 species of trees and shrubs native to the Southern Hemisphere in southern South America (Chile, Argentina) and Australasia (east and southeast Australia, New Zealand, New Guinea, and New Caledonia). The species are ecological dominants in many temperate forests in these regions. Some species are reportedly naturalised in Germany and Great Britain. The genus has a rich fossil record of leaves, cupules, and pollen, with fossils extending into the late Cretaceous period and occurring in Australia, New Zealand, Antarctica, and South America. Description The leaves are toothed or entire, evergreen or deciduous. The fruit is a small, flattened or triangular nut, borne in cupules containing one to seven nuts. Reproduction Many individual trees are extremely old, and at one time, some populations were thought to be unable to reproduce in present-day conditions where they were growing, except by suckering ( clonal rep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fiordland
Fiordland is a geographical region of New Zealand in the south-western corner of the South Island, comprising the westernmost third of Southland. Most of Fiordland is dominated by the steep sides of the snow-capped Southern Alps, deep lakes, and its steep, glacier-carved and now ocean-flooded western valleys. The name "Fiordland" comes from a variant spelling of the Scandinavian word for this type of steep valley, "fjord". The area of Fiordland is dominated by, and very roughly coterminous with, Fiordland National Park, New Zealand's largest National Park. Due to the often steep terrain and high amount of rainfall supporting dense vegetation, the interior of the Fiordland region is largely inaccessible. As a result, Fiordland was never subjected to notable logging operations, and even attempts at whaling, seal hunting, and mining were on a small scale and short-lived, partly also because of the challenging weather. Today, Fiordland contains by far the greatest extent of u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southland Region
Southland ( mi, Murihiku) is New Zealand's southernmost region. It consists mainly of the southwestern portion of the South Island and Stewart Island/Rakiura. It includes Southland District, Gore District and the city of Invercargill. The region covers over 3.1 million hectares and spans over 3,400 km of coast. History The earliest inhabitants of Murihiku (meaning "the last joint of the tail") were Māori of the Waitaha iwi, followed later by Kāti Māmoe and Kāi Tahu. Waitaha sailed on the Uruao waka, whose captain Rakaihautū named sites and carved out lakes throughout the area. The Takitimu Mountains were formed by the overturned Kāi Tahu waka Tākitimu. Descendants created networks of customary food gathering sites, travelling seasonally as needed, to support permanent and semi-permanent settlements in coastal and inland regions. In later years, the coastline was a scene of early extended contact between Māori and Europeans, in this case sealers, whalers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Westland District
Westland District is a Districts of New Zealand, territorial authority district on the West Coast, New Zealand, West Coast of New Zealand's South Island. It is administered by the Westland District Council. The district's population is History Westland was originally a part of Canterbury Province, administered from Christchurch in the East coast. The booming population as a result of the gold rush, together with the difficulty of travel and communication across the Southern Alps, led first to the creation of a special Westland County, then the formal separation of Westland from Canterbury to form the short-lived Westland Province (1873–1876). Westland Province also included what is now the southern portion of Grey District with the provincial boundary at the Grey River (New Zealand), Grey and Arnold River (New Zealand), Arnold rivers. Greymouth proper was in Westland Province, Cobden, New Zealand, Cobden, on the north bank of the Grey River, was in Nelson Province . After the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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