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Ourisia Remotifolia
''Ourisia remotifolia'' is a species of flowering plant in the family Plantaginaceae that is endemic to high-elevation habitats in the South Island of New Zealand. Mary Kalin Arroyo described ''O. remotifolia'' in 1984. Plants of this species of New Zealand mountain foxglove are Perennial plant, perennial, small-leaved herbs that are covered in a mixture of glandular and non-glandular hairs. They have hairy, crenate, ovate leaves that are oppositely arranged and tightly packed along the creeping stem. The flowers are single or in pairs in each node, with a zygomorphic calyx and corolla. The corolla is white and the corolla tube is purple inside with three lines of white hairs. It is listed as At Risk - Naturally Uncommon. Taxonomy ''Ourisia remotifolia'' Arroyo is in the plant family Plantaginaceae. Mary Kalin Arroyo described ''O. remotifolia'' in 1984. The type material was collected by Mary Kalin Arroyo at Gertrude Saddle, Fiordland National Park, South Island, New Zeala ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mary Kalin Arroyo
Dr. Mary Therese Kalin-Arroyo was born in 1944 in New Zealand. She is currently a professor of biology at the University of Chile. Kalin-Arroyo is notable for revising the indigenous genus ''Ourisia'' and discovering several new species in New Zealand. Her studies have also led to the designation of central Chile as a biodiversity hotspot. Early life and education She earned her BSc honors degree at the University of Canterbury in Christchurch, New Zealand in graduating with first class honours in 1967. She then completed her Ph.D in Botany from UC Berkeley in 1971. The following year, Kalin-Arroyo did a post-doctoral with Peter Raven at the New York Botanical Garden. In 1978, she married her husband Manuel Arroyo and together with their son, moved to the University of Chile where she would work as an associate professor. Dr. Kalin-Arroyo would later become a full professor in 1984. Currently, she is the director of the Institute for Ecology and Biodiversity at the University ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichome
Trichomes (); ) are fine outgrowths or appendages on plants, algae, lichens, and certain protists. They are of diverse structure and function. Examples are hairs, glandular hairs, scales, and papillae. A covering of any kind of hair on a plant is an indumentum, and the surface bearing them is said to be pubescent. Algal trichomes Certain, usually filamentous, algae have the terminal cell produced into an elongate hair-like structure called a trichome. The same term is applied to such structures in some cyanobacteria, such as '' Spirulina'' and ''Oscillatoria''. The trichomes of cyanobacteria may be unsheathed, as in ''Oscillatoria'', or sheathed, as in ''Calothrix''. These structures play an important role in preventing soil erosion, particularly in cold desert climates. The filamentous sheaths form a persistent sticky network that helps maintain soil structure. Plant trichomes Plant trichomes have many different features that vary between both species of plants an ... [...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] |
Westland, New Zealand
Westland District is a territorial authority district on the 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 and Arnold rivers. Greymouth proper was in Westland Province, Cobden, on the north bank of the Grey River, was in Nelson Province . After the abolition of the provinces in 1876, a new Westland County was created with roughly the same borders as the old Province. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canterbury Region
Canterbury ( mi, Waitaha) is a region of New Zealand, located in the central-eastern South Island. The region covers an area of , making it the largest region in the country by area. It is home to a population of The region in its current form was established in 1989 during nationwide local government reforms. The Kaikoura District joined the region in 1992 following the abolition of the Nelson-Marlborough Regional Council. Christchurch, the South Island's largest city and the country's second-largest urban area, is the seat of the region and home to percent of the region's population. Other major towns and cities include Timaru, Ashburton, Rangiora and Rolleston. History Natural history The land, water, flora, and fauna of Waitaha/Canterbury has a long history stretching from creation of the greywacke basement rocks that make up the Kā Tiritiri o te Moana/Southern Alps to the arrival of the first humans. This history is linked to the creation of the earth, the so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ourisia Remotifolia 173471386
''Ourisia'' is a genus of flowering plants of the family Plantaginaceae, native to Andean South America, Tasmania or New Zealand. Species Species assigned to ''Ourisia'' include: *'' Ourisia alpina'' *'' Ourisia biflora'' *'' Ourisia breviflora'' *''Ourisia caespitosa'' *''Ourisia calycina'' *''Ourisia chamaedrifolia'' * ''Ourisia confertifolia'' *''Ourisia cotapatensis'' *''Ourisia coccinea'' *''Ourisia crosbyi'' *''Ourisia fragrans'' *''Ourisia fuegiana'' * '' Ourisia glandulosa'' * ''Ourisia integrifolia'' * ''Ourisia macrocarpa'' *''Ourisia macrophylla'' *''Ourisia microphylla'' *'' Ourisia modesta'' *''Ourisia muscosa'' *''Ourisia polyantha'' *''Ourisia pulchella'' *''Ourisia pygmaea'' *''Ourisia remotifolia'' *''Ourisia ruellioides'' *''Ourisia serpyllifolia'' * ''Ourisia sessilifolia'' * ''Ourisia simpsonii'' * ''Ourisia spathulata'' * ''Ourisia vulcanica ''Ourisia vulcanica'' is a species of flowering plant in the family Plantaginaceae that is endemic to the North ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leaf
A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, flower, and fruit collectively form the shoot system. In most leaves, the primary photosynthetic tissue is the palisade mesophyll and is located on the upper side of the blade or lamina of the leaf but in some species, including the mature foliage of ''Eucalyptus'', palisade mesophyll is present on both sides and the leaves are said to be isobilateral. Most leaves are flattened and have distinct upper (adaxial) and lower ( abaxial) surfaces that differ in color, hairiness, the number of stomata (pores that intake and output gases), the amount and structure of epicuticular wax and other features. Leaves are mostly green in color due to the presence of a compound called chlorophyll that is essential for photosynthesis as it absorbs light ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emarginate
The following is a list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular or irregular, may be smooth or bearing hair, bristles or spines. For more terms describing other aspects of leaves besides their overall morphology see the leaf article. The terms listed here all are supported by technical and professional usage, but they cannot be represented as mandatory or undebatable; readers must use their judgement. Authors often use terms arbitrarily, or coin them to taste, possibly in ignorance of established terms, and it is not always clear whether because of ignorance, or personal preference, or because usages change with time or context, or because of variation between specimens, even specimens from the same plant. For example, whether to call leaves on the same tree "acuminate", "lanceolate", or "linear" co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Staminode
In botany, a staminode is an often rudimentary, sterile or abortive stamen, which means that it does not produce pollen.Jackson, Benjamin, Daydon; ''A Glossary of Botanic Terms with their Derivation and Accent''; Published by Gerald Duckworth & Co. London, 4th ed 1928 Staminodes are frequently inconspicuous and stamen-like, usually occurring at the inner whorl of the flower, but are also sometimes long enough to protrude from the corolla. Sometimes, the staminodes are modified to produce nectar, as in the Witch Hazel ''( Hamamelis)''.jin lu mei shu. Hamamelis Linnaeus, Sp. Pl. 1: 124. 1753. Flora of China 9: 32. 2003 Staminodes can be a critical characteristic for differentiating between species, for instance in the orchid genus ''Paphiopedilum'', and among the penstemons. In the case of Cannas, the petals are inconsequential and the staminodes are refined into eye-catching petal-like replacements. A spectacular example of staminode is given by ''Couroupita guianensis'', a tr ... [...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] |
Pedicel (botany)
In botany, a pedicel is a stem that attaches a single flower to the inflorescence. Such inflorescences are described as ''pedicellate''. Description Pedicel refers to a structure connecting a single flower to its inflorescence. In the absence of a pedicel, the flowers are described as sessile. Pedicel is also applied to the stem of the infructescence. The word "pedicel" is derived from the Latin ''pediculus'', meaning "little foot". The stem or branch from the main stem of the inflorescence that holds a group of pedicels is called a peduncle. A pedicel may be associated with a bract or bracts. In cultivation In Halloween types of pumpkin or squash plants, the shape of the pedicel has received particular attention because plant breeders are trying to optimize the size and shape of the pedicel for the best "lid" for a "jack-o'-lantern". Gallery File:Asclepias amplexicaulis.jpg, Long pedicels of clasping milkweed with a single peduncle File:314 Prunus avium.jpg, Cherr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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