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Alrawia Nutans
''Alrawia'' is a genus of bulbous flowering plants in the family Asparagaceae, subfamily Scilloideae (also treated as the family Hyacinthaceae). It is native to north-eastern Iraq and Iran. Description Species of ''Alrawia'' grow from bulbs covered with a tunic that is grayish outside and often violet inside. They produce a single flowering stem ( scape); the inflorescence consists of a raceme. Individual flowers are borne on a short stalk (pedicel) which is turned downwards when the flowers first appear. The tepals are violet with whitish lobe tips and are joined at the base for up to half their length., pp. 4–5 The pedicels lengthen and turn upwards after flowers are fertilized; the black seeds are globular or ovate. Species , the World Checklist of Selected Plant Families recognized two species:Search for "Alrawia", *''Alrawia bellii'' (Baker) Perss. & Wendelbo :Flowers up to long; tube one quarter the length of the whole flower; western Iran. *''Alrawia nutans'' (Wend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Per Erland Berg Wendelbo
Per Erland Berg Wendelbo (19 September 1927 – 25 September 1981) was a Norwegian botanist. He was born in Oslo, a son of physician Per Kristian Lund Wendelbo and textile designer Sigrun Berg, and grandson of judge and politician Paal Berg. He was appointed professor of botany at the University of Gothenburg from 1965 to 1981, and was a specialist on Southwestern Asian flora. Among his publications are ''The Ariamehr Botanical Garden Handbook'' from 1974 and ''Tulips and Irises of Iran and their relatives'' from 1977. In 1959, he first published ''Iris cycloglossa'' from Afghanistan Afghanistan, officially the Islamic Emirate of Afghanistan,; prs, امارت اسلامی افغانستان is a landlocked country located at the crossroads of Central Asia and South Asia. Referred to as the Heart of Asia, it is bordere ..., in 'Biologiske Skrifter' 10(3): 187. Selected publications * References 1927 births 1981 deaths Scientists from Oslo 20th-cent ... [...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] |
Alpine House
A greenhouse (also called a glasshouse, or, if with sufficient heating, a hothouse) is a structure with walls and roof made chiefly of transparent material, such as glass, in which plants requiring regulated climatic conditions are grown.These structures range in size from small sheds to industrial-sized buildings. A miniature greenhouse is known as a cold frame. The interior of a greenhouse exposed to sunlight becomes significantly warmer than the external temperature, protecting its contents in cold weather. Many commercial glass greenhouses or hothouses are high tech production facilities for vegetables, flowers or fruits. The glass greenhouses are filled with equipment including screening installations, heating, cooling, and lighting, and may be controlled by a computer to optimize conditions for plant growth. Different techniques are then used to manage growing conditions, including air temperature, relative humidity and vapour-pressure deficit, in order to provide the opti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulb Frame
In agriculture and gardening, a cold frame is a transparent-roofed enclosure, built low to the ground, used to protect plants from adverse weather, primarily excessive cold or wet. The transparent top admits sunlight and prevents heat escape via convection that would otherwise occur, particularly at night. Essentially, a cold frame functions as a miniature greenhouse to extend the growing season. Historically, cold frames were built to be used in addition to a heated greenhouse. The name itself exemplifies the distinction between the warm greenhouse and the unheated cold frame. They were frequently built as part of the greenhouse's foundation brickwork along the southern wall (in northern latitudes). This allowed seeds to be germinated in the greenhouse and then easily moved to the attached cold frame to be "hardened-off" before final planting outside. Cold frames are similar to some enclosed hotbeds, also called hotboxes. The difference is in the amount of heat generated inside. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brian Mathew
Brian Frederick Mathew MBE, VMH is a British botanist, born in the village of Limpsfield, Surrey, England. His particular area of expertise is bulbous plants, particularly ornamental bulbous plants, although he has contributed to other fields of taxonomy and horticulture. He has authored or co-authored many books on bulbs and bulbous genera which appeal to both botanists and gardeners, as well as specialist monographs on other genera, including ''Daphne'' (with Chris Brickell), ''Lewisia'', and ''Helleborus''. His work has been recognized by the British Royal Horticultural Society and the International Bulb Society. Biography Brian Mathew was born in Limpsfield, a village in Surrey, England. His parents encouraged both Brian and his sister to look after small garden plots allocated to them. He records that as his father was a very successful vegetable gardener, his own interests were more in ornamental plants. An early encounter with ''Helleborus orientalis'' may have laid the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alrawia Nutans
''Alrawia'' is a genus of bulbous flowering plants in the family Asparagaceae, subfamily Scilloideae (also treated as the family Hyacinthaceae). It is native to north-eastern Iraq and Iran. Description Species of ''Alrawia'' grow from bulbs covered with a tunic that is grayish outside and often violet inside. They produce a single flowering stem ( scape); the inflorescence consists of a raceme. Individual flowers are borne on a short stalk (pedicel) which is turned downwards when the flowers first appear. The tepals are violet with whitish lobe tips and are joined at the base for up to half their length., pp. 4–5 The pedicels lengthen and turn upwards after flowers are fertilized; the black seeds are globular or ovate. Species , the World Checklist of Selected Plant Families recognized two species:Search for "Alrawia", *''Alrawia bellii'' (Baker) Perss. & Wendelbo :Flowers up to long; tube one quarter the length of the whole flower; western Iran. *''Alrawia nutans'' (Wend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alrawia Bellii
''Alrawia'' is a genus of bulbous flowering plants in the family Asparagaceae, subfamily Scilloideae (also treated as the family Hyacinthaceae). It is native to north-eastern Iraq and Iran. Description Species of ''Alrawia'' grow from bulbs covered with a tunic that is grayish outside and often violet inside. They produce a single flowering stem ( scape); the inflorescence consists of a raceme. Individual flowers are borne on a short stalk (pedicel) which is turned downwards when the flowers first appear. The tepals are violet with whitish lobe tips and are joined at the base for up to half their length., pp. 4–5 The pedicels lengthen and turn upwards after flowers are fertilized; the black seeds are globular or ovate. Species , the World Checklist of Selected Plant Families recognized two species:Search for "Alrawia", *''Alrawia bellii'' (Baker) Perss. & Wendelbo :Flowers up to long; tube one quarter the length of the whole flower; western Iran. *''Alrawia nutans'' (Wend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Checklist Of Selected Plant Families
The World Checklist of Selected Plant Families (usually abbreviated to WCSP) is an "international collaborative programme that provides the latest peer reviewed and published opinions on the accepted scientific names and synonyms of selected plant families." Maintained by the Royal Botanic Gardens, Kew, it is available online, allowing searches for the names of families, genera and species, as well as the ability to create checklists. The project traces its history to work done in the 1990s by Kew researcher Rafaël Govaerts on a checklist of the genus ''Quercus''. Influenced by the Global Strategy for Plant Conservation, the project expanded. , 173 families of seed plants were included. Coverage of monocotyledon families is complete; other families are being added. There is a complementary project called the International Plant Names Index (IPNI), in which Kew is also involved. The IPNI aims to provide details of publication and does not aim to determine which are accepted spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tepal
A tepal is one of the outer parts of a flower (collectively the perianth). The term is used when these parts cannot easily be classified as either sepals or petals. This may be because the parts of the perianth are undifferentiated (i.e. of very similar appearance), as in ''Magnolia'', or because, although it is possible to distinguish an outer whorl of sepals from an inner whorl of petals, the sepals and petals have similar appearance to one another (as in ''Lilium''). The term was first proposed by Augustin Pyramus de Candolle in 1827 and was constructed by analogy with the terms "petal" and "sepal". (De Candolle used the term ''perigonium'' or ''perigone'' for the tepals collectively; today, this term is used as a synonym for ''perianth''.) p. 39. Origin Undifferentiated tepals are believed to be the ancestral condition in flowering plants. For example, '' Amborella'', which is thought to have separated earliest in the evolution of flowering plants, has flowers with undiffer ... [...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] |
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed on the axis of a plant. The modifications can involve the length and the nature of the internodes and the phyllotaxis, as well as variations in the proportions, compressions, swellings, adnations, connations and reduction of main and secondary axes. One can also define an inflorescence as the reproductive portion of a plant that bears a cluster of flowers in a specific pattern. The stem holding the whole inflorescence is called a peduncle. The major axis (incorrectly referred to as the main stem) above the peduncle bearing the flowers or secondary branches is called the rachis. The stalk of each flower in the inflorescence is called a pedicel. A flower that is not part of an inflorescence is called a solitary flower and its stalk is al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
