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Santalales Genera
The Santalales are an order of flowering plants with a cosmopolitan distribution, but heavily concentrated in tropical and subtropical regions. It derives its name from its type genus ''Santalum'' (sandalwood). Mistletoe is the common name for a number of parasitic plants within the order. Overview Many of the members of the order are parasitic plants, mostly hemiparasites, able to produce sugars through photosynthesis, but tapping the stems or roots of other plants to obtain water and minerals; some (e.g. '' Arceuthobium'') are obligate parasites, have low concentrations of chlorophyll within their shoots (1/5 to 1/10 of that found in their host's foliage), and derive the majority of their sustenance from their hosts' vascular tissues (water, micro- and macronutrients, and sucrose). Most have seeds without testae (seed coats), which is unusual for flowering plants. Classification The APG IV system of 2016 includes seven families. As in the earlier APG III system, it w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santalum Haleakalae
''Santalum haleakalae'', known as Haleakala sandalwood or ''Iliahi'' in Hawaiian, is a species of flowering tree in the sandalwood family, that is endemic to the islands of Maui, Lanai, and Molokai in the Hawaiian Islands, part of the United States. It grows in subalpine shrublands at elevations of , especially on the slopes of Haleakalā. Description This is a shrub or small tree with green, ovate leaves that are often glaucous and tinged purple, especially in ''var. halekalae''. The flowers are cream-colored to red in bud and cream to white when open, arranged in tight compound cymes. The fruit are reddish to black drupes. Range ''Santalum haleakalae'' var. ''haleakalae'' occurs only on the slopes of Haleakalā on Maui. ''Santalum haleakalae'' var. ''lanaiense'' occurs on the islands of Lanai, Molokai, and Maui. Habitat ''Santalum haleakalae'' var. ''haleakalae'' occupies subalpine and montane mesic forests, while ''Santalum haleakalae'' var. ''lanaiense'' occupies w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
APG III System
The APG III system of flowering plant classification is the third version of a modern, mostly molecular-based, system of plant taxonomy being developed by the Angiosperm Phylogeny Group (APG). Published in 2009, it was superseded in 2016 by a further revision, the APG IV system. Along with the publication outlining the new system, there were two accompanying publications in the same issue of the Botanical Journal of the Linnean Society: * The first, by Chase & Reveal, was a formal phylogenetic classification of all land plants (embryophytes), compatible with the APG III classification. As the APG have chosen to eschew ranks above order, this paper was meant to fit the system into the existing Linnaean hierarchy for those that prefer such a classification. The result was that all land plants were placed in the class Equisetopsida, which was then divided into 16 subclasses and a multitude of superorders. * The second, by Haston ''et al.'', was a linear sequence of families followi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dahlgren System
One of the modern systems of plant taxonomy, the Dahlgren system was published by monocot specialist Rolf Dahlgren in 1975 and revised in 1977, and 1980. However, he is best known for his two treatises on monocotyledons in 1982 and revised in 1985. His wife Gertrud Dahlgren continued the work after his death. Dahlgren ranked the dicotyledons and monocotyledons as subclasses of the class of flowering plants (angiosperms) and further divided them into superorders. Originally (1975) he used the suffix ''-anae'', as did Cronquist, to designate these, but in 1980 changed this to ''-florae'' in accordance with Thorne. In the 1989 revision, published by his wife, the alternate names Magnoliidae and Liliidae were dropped in favour of Dicotyledon and Monocotyledon, and the suffix ''-florae'' reverted to ''-anae'' (''e.g.'' Alismatanae for Alismatiflorae). Reveal provides an extensive listing of Dahlgren's classification. (Note the synonyms, both nomenclatural and taxonomic, for ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angiosperm Phylogeny Website
The Angiosperm Phylogeny Website (or APweb) is a website dedicated to research on angiosperm phylogeny and taxonomy. The site is hosted by the Missouri Botanical Garden website and maintained by researchers, Peter F. Stevens and Hilary M. Davis. Peter F. Stevens is a member of the Angiosperm Phylogeny Group The Angiosperm Phylogeny Group (APG) is an informal international group of systematic botanists who collaborate to establish a consensus on the taxonomy of flowering plants (angiosperms) that reflects new knowledge about plant relationships disco ... (APG). The taxonomy presented is broadly based on the work of the APG, with modifications to incorporate new results. References External links * , hosted by thMissouri Botanical Garden Plant taxonomy American science websites Angiosperm taxonomy Angiosperm Phylogeny Group Online taxonomy databases Missouri Botanical Garden {{botany-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensu
''Sensu'' is a Latin word meaning "in the sense of". It is used in a number of fields including biology, geology, linguistics, semiotics, and law. Commonly it refers to how strictly or loosely an expression is used in describing any particular concept, but it also appears in expressions that indicate the convention or context of the usage. Common qualifiers ''Sensu'' is the ablative case of the noun ''sensus'', here meaning "sense". It is often accompanied by an adjective (in the same case). Three such phrases are: *''sensu stricto'' – "in the strict sense", abbreviation ''s.s.'' or ''s.str.''; *''sensu lato'' – "in the broad sense", abbreviation ''s.l.''; *''sensu amplo'' – "in a relaxed, generous (or 'ample') sense", a similar meaning to ''sensu lato''. Søren Kierkegaard uses the phrase ''sensu eminenti'' to mean "in the pre-eminent r most important or significantsense". When appropriate, comparative and superlative adjectives may also be used to convey the meaning ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schoepfiaceae
Schoepfiaceae is a family of flowering plants recognized in the APG III system of 2009. The family was previously only recognized by few taxonomists; the plants in question usually being assigned to family Olacaceae and Santalaceae. The genus ''Schoepfia'' is, according to molecular studies, more closely related to the families Misodendraceae and Loranthaceae, and to uphold the criteria of monophyly it must be excluded from Olacaceae. Further investigations have also shown that the South American genera ''Arjona'' and '' Quinchamalium'' (previously in the family Santalaceae) are part of this family. Thus the family contains three genera. ''Quinchamalium'' was thought to comprise 21 species in 2015, but this was reduced to a single widespread and morphologically variable species in that year. Christenhusz ''et al''. claimed there was a total of 58 known species in 2016, but for some reason counted 25 species of ''Quinchamalium'' and eight of ''Arjona''. *''Arjona'' Cavanilles (5 o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santalaceae
The Santalaceae, sandalwoods, are a widely distributed family of flowering plants (including small trees, shrubs, perennial herbs, and epiphytic climbersHewson & George t al.br>''Santalaceae'' taxonomy, 1984, pp. 191-194.) which, like other members of Santalales, are partially parasitic on other plants. Its flowers are bisexual or, by abortion ("flower drop"), unisexual.Pilger, R''Santalaceae''(with 17 figures). R. Br. Prodr. Fl. Nov. Holl. (1810) 350, pp. 1-45. Modern treatments of the Santalaceae include the family Viscaceae (mistletoes), previously considered distinct. The APG II system of 2003 recognises the family and assigns it to the order Santalales in the clade core eudicots. However, the circumscription by APG is much wider than accepted by previous classifications, including the plants earlier treated in families Eremolepidaceae and Viscaceae. It includes about 1,000 species in 43 genera. Many have reported traditional and cultural uses, including as medicine. Genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opiliaceae
Opiliaceae is a family of flowering plants comprising 11 genera and 33 known species. It consists of tropical woody plants. Several genera contain parasitic species. The biggest genus, in number of species and in stature of the individual plants, is ''Agonandra'', the only American genus. Since it was first described this family has been recognized universally by taxonomists. The APG II system, of 2003 (unchanged from the APG system, of 1998), also recognizes this family and assigns it to the order Santalales in the clade core eudicots 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 .... References External links Opiliaceae at Parasitic Plants Eudicot families {{Santalales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olacaceae
Olacaceae is a family of flowering plants in the order Santalales. They are woody plants, native throughout the tropical regions of the world. , the circumscription of the family varies; some sources maintain a broad family, others split it into seven segregate families. Taxonomy The 1998 APG system and the 2003 APG II system assign it to the order Santalales in the clade core eudicots. Prior to the advent of molecular data, the circumscription of the family Olacaceae varied widely between different authorities.Valéry Malécot and Daniel L. Nickrent. 2008. "Molecular Phylogenetic Relationships of Olacaceae and Related Santalales". ''Systematic Botany'' 33(1):97-106. Among these various classifications, about 30 genera were included in the family. 15 genera are recognized for Olacaceae by the Germplasm Resources Information Network. The phylogenetic investigation published in 2008 recovered seven clades that were well-supported by molecular and morphological characters, but no for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Misodendraceae
''Misodendrum'' is a genus of hemiparasites which grow as mistletoes on various species of ''Nothofagus''. Its species are all restricted to South America. The name of the genus is incorrectly spelt in a number of ways, including ''Misodendron'' and ''Myzodendron''. ''Misodendrum'' is placed in its own family, Misodendraceae, in the order Santalales. These plants have the common name of feathery mistletoes. Species , The Plant List accepts the following species: *''Misodendrum angulatum'' Phil. *'' Misodendrum brachystachyum'' DC. *'' Misodendrum gayanum'' Tiegh. *'' Misodendrum linearifolium'' DC. *'' Misodendrum macrolepis'' Phil. *'' Misodendrum oblongifolium'' DC. *'' Misodendrum punctulatum'' Banks ex DC. *'' Misodendrum quadriflorum'' DC. See also *Parasitic plant A parasitic plant is a plant that derives some or all of its nutritional requirements from another living plant. They make up about 1% of angiosperms and are found in almost every biome. All parasitic plants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loranthaceae
Loranthaceae, commonly known as the showy mistletoes, is a family of flowering plants. It consists of about 75 genera and 1,000 species of woody plants, many of them hemiparasites. The three terrestrial species are ''Nuytsia floribunda'' (the Western Australian Christmas tree), ''Atkinsonia ligustrina'' (from the Blue Mountains of Australia), and '' Gaiadendron punctatum'' (from Central/South America.) Loranthaceae are primarily xylem parasites, but their haustoria may sometimes tap the phloem, while '' Tristerix aphyllus'' is almost holoparasitic. For a more complete description of the Australian Loranthaceae, seFlora of Australia online, for the Malesian Loranthaceae seFlora of Malesia Originally, Loranthaceae contained all mistletoe species, but the mistletoes of Europe and North America (''Viscum'', ''Arceuthobium'', and ''Phoradendron'') belong to the family Santalaceae. The APG II system 2003 assigns the family to the order Santalales in the clade core eudicots. Phylog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balanophoraceae
The Balanophoraceae are a subtropical to tropical family of obligate parasitic flowering plants, notable for their unusual development and formerly obscure affinities. In the broadest circumscription, the family consists of 16 genera. Alternatively, three genera may be split off into the segregate family Mystropetalaceae. The plants are normally found in moist inland forests growing on tree roots and have an above ground inflorescence with the overall appearance of a fungus, composed of numerous minute flowers. The inflorescences develop inside the tuberous underground part of the plant, before rupturing it and surfacing. The plants are monoecious, or dioecious, and the fruits are indehiscent drupes or nuts. The underground portion, which attaches itself to the host, looks like a tuber, and is not a proper root system. The plants contain no chlorophyll. ''Balanophora'' means "bearing an acorn" (from the shape of the female inflorescence). Taxonomy In the classification system of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
