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Levenhookia Sect. Levenhookia
''Levenhookia'' sect. ''Levenhookia'' is a section of two to three recognized species in the family Stylidiaceae. Section ''Levenhookia'' was originally described by Mildbraed as section ''Eulevenhookia'', which was later changed to the current section title ''Levenhookia'' as an autonym since it is the type section.Mildbraed, J. (1908). Stylidiaceae. In: Engler, A. ''Das Pflanzenreich: Regni vegetabilis conspectus''. IV. 278. Leipzig.The International Plant Names Index (2004)''Levenhookia'' sect. ''Eulevenhookia'' Mildbr.Accessed 11 August 2007. Mildbraed originally placed '' L. pauciflora'' and '' L. pusilla'' in this section. It could also contain '' L. pulcherrima'', which Carlquist described in 1969 and noted its close association to the other two species in section ''Levenhookia'' but neglected to place it within a section.Carlquist, S. (1969). Studies in Stylidiaceae: New taxa, field observations, evolutionary tendencies. ''Aliso'', 7(1): 13-64. References Levenhookia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Levenhookia Pauciflora
''Levenhookia pauciflora'', the deceptive stylewort, is a dicotyledonous plant that belongs to the genus ''Levenhookia'' (family Stylidiaceae). It is an ephemeral annual that grows from tall with ovate to suborbicular leaves. Flowers are white and bloom from September to November in its native range. ''L. pauciflora'' is endemic to Western Australia where it grows in sandy soils in sandstone or granitic areas.Paczkowska, Grazyna. (1996)''Levenhookia pauciflora'' Benth.FloraBase, Western Australian Herbarium, Department of Environment and Conservation, Government of Western Australia. Accessed online: 23 August 2007.Mildbraed, J. (1908). Stylidiaceae. In: Engler, A. ''Das Pflanzenreich: Regni vegetabilis conspectus''. IV. 278. Leipzig. The flowers of ''L. pauciflora'' resemble those of ''Stylidium ecorne'' and it has been said that ''S. ecorne'' mimics ''L. pauciflora'' to take advantage of its pollinators.Carlquist, S. (1969). Studies in Stylidiaceae: New taxa, field observation ... [...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 i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Levenhookia Pulcherrima
''Levenhookia pulcherrima'', the beautiful stylewort, is a dicotyledonous plant that belongs to the genus ''Levenhookia'' (family Stylidiaceae). It is an ephemeral annual that grows on average from tall. Lower leaves are spathulate while upper leaves are oblanceolate and up to long. Stems and older leaves are red. Flowers are pink to rose-coloured with the shorter anterior petals about long. The sensitive labellum is obovate and white with a circular grey-purple mark on either side of the terminal portion. Both leaves and stems of ''L. pulcherrima'' possess more glandular trichomes than in other ''Levenhookia'' species. When describing this new species, Sherwin Carlquist noted that it is most closely related to '' L. preissii'' and '' L. pauciflora'', which might place it with those species in section ''Levenhookia'', but Carlquist neglected to specifically say so. He also noted that several features of this species, including its corolla lobe, labellum, throat appendage, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Levenhookia Pusilla
''Levenhookia pusilla'', the midget stylewort or tiny stylewort, is a dicotyledonous plant that belongs to the genus ''Levenhookia'' (family Stylidiaceae). It is an ephemeral annual that grows about 5 to 6 cm tall with suborbicular to ovate-spathulate leaves. Flowers are pink to white and bloom from September to December in its native range. ''L. pusilla'' is endemic to southwestern Western Australia and South Australia South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest of Australia's states and territories ... where it grows in granitic or lateritic soils.Paczkowska, Grazyna. (1996)''Levenhookia pusilla'' R.Br. FloraBase, Western Australian Herbarium, Department of Environment and Conservation, Government of Western Australia. Accessed online: 28 August 2007.Mildbraed, J. (1908). Stylidiaceae. In: Engler, A. ''Das ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rank (botany)
In biological classification, taxonomic rank is the relative level of a group of organisms (a taxon) in an ancestral or hereditary hierarchy. A common system consists of species, genus, family, order, class, phylum, kingdom, domain. While older approaches to taxonomic classification were phenomenological, forming groups on the basis of similarities in appearance, organic structure and behaviour, methods based on genetic analysis have opened the road to cladistics. A given rank subsumes under it less general categories, that is, more specific descriptions of life forms. Above it, each rank is classified within more general categories of organisms and groups of organisms related to each other through inheritance of traits or features from common ancestors. The rank of any ''species'' and the description of its ''genus'' is ''basic''; which means that to identify a particular organism, it is usually not necessary to specify ranks other than these first two. Consider a part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stylidiaceae
The family Stylidiaceae is a taxon of dicotyledonous flowering plants. It consists of five genera with over 240 species, most of which are endemic to Australia and New Zealand. Members of Stylidiaceae are typically grass-like herbs or small shrubs and can be perennials or annuals. Most species are free standing or self-supporting, though a few can be climbing or scrambling ('' Stylidium scandens'' uses leaf tips recurved into hooks to climb). The pollination mechanisms of ''Stylidium'' and '' Levenhookia'' are as follows: In ''Stylidium'' the floral column, which consists of the fused stamen and style, springs violently from one side (usually under the flower) when triggered. This deposits the pollen on a visiting insect. In ''Levenhookia'', however, the column is immobile, but the hooded labellum is triggered and sheds pollen. In 1981, only about 155 species were known in the family. The current number of species by genus (reported in 2002) is as follows: ''Forstera'' - 5, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autonym (botany)
In botanical nomenclature, autonyms are automatically created names, as regulated by the ''International Code of Nomenclature for algae, fungi, and plants'' that are created for certain subdivisions of genera and species, those that include the type of the genus or species. An autonym might not be mentioned in the publication that creates it as a side-effect. Autonyms "repeat unaltered" the genus name or species epithet of the taxon being subdivided, and no other name for that same subdivision is validly published (article 22.2). For example, ''Rubus'' subgenus ''Eubatus'' is not validly published, and the subgenus is known as ''Rubus'' subgen. ''Rubus''. Autonyms are cited without an author. The publication date of the autonym is taken to be the same as that of the subdivision(s) that automatically established the autonym, with some special provisions (the autonym is considered to have priority over the other names of the same rank established at the same time (article 11.6)). Art ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biological Type
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the International Code of Nomenclature for algae, fungi, and plants (ICN), the scientific name of every taxon is almost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Levenhookia
''Levenhookia'', also known as the styleworts, is a genus of ten recognized species in the family Stylidiaceae and is endemic to Australia. The genus is restricted to Western Australia almost exclusively with a few exceptions: '' L. pusilla'''s range extends into South Australia, '' L. dubia'''s range extends through South Australia into Victoria and New South Wales, '' L. sonderi'' is native only to Victoria, and '' L. chippendalei'' is also found in the Northern Territory.Erickson, R. and Willis, J.H. (1966). Some additions to Australian Stylidiaceae. ''Victorian Naturalist'', 83: 107-112.Carlquist, S. (1969). Studies in Stylidiaceae: New taxa, field observations, evolutionary tendencies. ''Aliso'', 7(1): 13-64. All species of ''Levenhookia'' possess a sensitive labellum that performs a similar function to the column of ''Stylidium'' species. The labellum responds to touch and enables the plants to promote cross-pollination and avoid self-pollination. Most species of ''L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eudicots Of Western Australia
The eudicots, Eudicotidae, or eudicotyledons are a clade of flowering plants mainly characterized by having two seed leaves upon germination. The term derives from Dicotyledons. Traditionally they were called tricolpates or non- magnoliid dicots by previous authors. The botanical terms were introduced in 1991 by evolutionary botanist James A. Doyle and paleobotanist Carol L. Hotton to emphasize the later evolutionary divergence of tricolpate dicots from earlier, less specialized, dicots. Numerous familiar plants are eudicots, including many common food plants, trees, and ornamentals. Some common and familiar eudicots include sunflower, dandelion, forget-me-not, cabbage, apple, buttercup, maple, and macadamia. Most leafy trees of midlatitudes also belong to eudicots, with notable exceptions being magnolias and tulip trees which belong to magnoliids, and ''Ginkgo biloba'', which is not an angiosperm. Description The close relationships among flowering plants with tricolpat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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