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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] |
List Of Systems Of Plant Taxonomy
This list of systems of plant taxonomy presents "taxonomic systems" used in plant classification. A wiktionary:taxonomic system, taxonomic system is a coherent whole of taxonomy (biology), taxonomic judgments on circumscription (taxonomy), circumscription and placement of the considered taxa. It is only a "system" if it is applied to a large group of such taxa (for example, all the flowering plants). There are two main criteria for this list. A system must be taxonomic, that is deal with many plants, by their botanical names. Secondly it must be a system, i.e. deal with the relationships of plants. Although thinking about relationships of plants had started much earlier (see history of plant systematics), such systems really only came into being in the 19th century, as a result of an ever-increasing influx from all over the world of newly discovered plant species. The 18th century saw some early systems, which are perhaps precursors rather than full taxonomic systems. A mileston ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nymphaeanae
The Nymphaeales are an order of flowering plants, consisting of three families of aquatic plants, the Hydatellaceae, the Cabombaceae, and the Nymphaeaceae (water lilies). It is one of the three orders of basal angiosperms, an early-diverging grade of flowering plants. At least 10 morphological characters unite the Nymphaeales.Peter F. Stevens. 2001 onwards. Angiosperm Phylogeny Website At: Missouri Botanical Garden Website. (see ''External links'' below). One of the traits is the absence of a vascular cambium, which is required to produce both xylem (wood) and phloem, which therefore are missing. Molecular synapomorphies are also known. The Plant List, created by the Royal Botanic Gardens, Kew and Missouri Botanical Garden recognizes about 70 species in 11 genera within the order,The Plant List (website). 2010. (See ''External links'' below.) but a phylogenetic study of the genus ''Nymphaea'' implies that the number of species could be more than 90. The difference in species num ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rutiflorae
Sapindales is an order of flowering plants. Well-known members of Sapindales include citrus; maples, horse-chestnuts, lychees and rambutans; mangos and cashews; frankincense and myrrh; mahogany and neem. The APG III system of 2009 includes it in the clade malvids (in rosids, in eudicots) with the following nine families: *Anacardiaceae *Biebersteiniaceae *Burseraceae *Kirkiaceae *Meliaceae *Nitrariaceae (including Peganaceae and Tetradiclidaceae) *Rutaceae *Sapindaceae *Simaroubaceae The APG II system of 2003 allowed the optional segregation of families now included in the Nitrariaceae. In the classification system of Dahlgren the Rutaceae were placed in the order Rutales, in the superorder Rutiflorae (also called Rutanae). The Cronquist system of 1981 used a somewhat different circumscription, including the following families: *Staphyleaceae *Melianthaceae * Bretschneideraceae * Akaniaceae *Sapindaceae *Hippocastanaceae * Aceraceae *Burseraceae *Anacardiaceae *Julianiace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myrtiflorae
The Myrtales are an order of flowering plants in the malvid clade of the rosid group of dicotyledons. Well-known members of Myrtales include: myrtle, pōhutukawa, bay rum tree, clove, guava, acca (feijoa), allspice, eucalyptus, crape myrtles, henna tree, pomegranate, water caltrop, loosestrifes, cupheas (cigar plants), evening primroses, fuchsias, willowherbs, white mangrove, leadwood tree, African birch, Koster's curse, and velvet tree. Taxonomy Myrtales include the following nine families, according to the APG III system of classification: * Alzateaceae * Combretaceae ( leadwood family) * Crypteroniaceae * Lythraceae ( loosestrife and pomegranate family) * Melastomataceae (including Memecylaceae) * Myrtaceae (myrtle family; including Heteropyxidaceae, Psiloxylaceae) * Onagraceae (evening primrose and Fuchsia family) * Penaeaceae (including Oliniaceae, Rhynchocalycaceae) * Vochysiaceae The APG III system places the order within the eurosids; this is corroborated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proteiflorae
Proteales is an order of flowering plants consisting of three (or four) families. The Proteales have been recognized by almost all taxonomists. The representatives of the Proteales can be very different from each other due to their very early divergence. They possess seeds with little or no endosperm. The oldest fossils of Proteales are of the nelumbonaceous genus '' Notocyamus'' from the Barremian stage of the Early Cretaceous of Brazil, 126–121 Ma (million years ago). According to molecular clock calculations, the lineage that led to Proteales split from other plants about 128 Ma or 125 Ma. Families Within the classification system of Rolf Dahlgren, the Proteales were in the superorder Proteiflorae, also called Proteanae; The APG II system (of 2003) also recognizes this order, placing it in the clade Eudicots, with the following circumscription: * order Proteales :* family Nelumbonaceae :* family Proteaceae Platanaceae.html" ;"title=" family Platanaceae"> family Platan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fabiflorae
Fabales is an order of flowering plants included in the rosid group of the eudicots in the Angiosperm Phylogeny Group II classification system. In the APG II circumscription, this order includes the families Fabaceae or legumes (including the subfamilies Caesalpinioideae, Mimosoideae, and Faboideae), Quillajaceae, Polygalaceae or milkworts (including the families Diclidantheraceae, Moutabeaceae, and Xanthophyllaceae), and Surianaceae. Under the Cronquist system and some other plant classification systems, the order Fabales contains only the family Fabaceae. In the classification system of Dahlgren the Fabales were in the superorder Fabiflorae (also called Fabanae) with three families corresponding to the subfamilies of Fabaceae in APG II. The other families treated in the Fabales by the APG II classification were placed in separate orders by Cronquist, the Polygalaceae within its own order, the Polygalales, and the Quillajaceae and Surianaceae within the Rosales. The Fabaceae, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Podostemiflorae
Podostemaceae (riverweed family), a family in the order Malpighiales, comprise about 50 genera and species of more or less thalloid aquatic herbs. Distribution and habitat They are found mostly in tropical and subtropical areas worldwide. Many species are found in a very small geographic area, often even just a single river or waterfall. Because of their small range, many species are seriously threatened, especially from habitat loss (for example, due to dams flooding their habitat). Riverweeds adhere to hard surfaces (generally rock) in rapids and waterfalls of rivers. They are submerged when water levels are high, but during the dry season they live a terrestrial existence, flowering at this time. Their root anatomy is specialized for the purpose of clinging to rocks, and in fact details of the root structure are one of the ways of classifying riverweeds. Ecology In many rivers, Podostemaceae are an important food source for a wide range of animals. For example, the tadpo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rosiflorae
Rosales (, ) are an order of flowering plants. Peter F. Stevens (2001 onwards). "Rosales". At: Trees At: Angiosperm Phylogeny Website. At: Missouri Botanical Garden Website. (see ''External links'' below) Well-known members of Rosales include: roses, strawberries, blackberries and raspberries, apples and pears, plums, peaches and apricots, almonds, rowan and hawthorn, jujube, elms, banyans, figs, mulberries, breadfruit, nettles, hops, and cannabis. Rosales contain about 7,700 species, distributed into nine families and about 260 genera. Their type family is the rose family, Rosaceae. The largest families are Rosaceae (91/4828) and Urticaceae (53/2625). Taxonomy The order Rosales is strongly supported as monophyletic in phylogenetic analyses of DNA sequences, such as those carried out by members of the Angiosperm Phylogeny Group.Walter S. Judd, Christopher S. Campbell, Elizabeth A. Kellogg, Peter F. Stevens, and Michael J. Donoghue. 2008. ''Plant Systematics: A Phylogenetic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Primuliflorae
Primulales was an order of flowering plants. This order was recognized in several systems with little variation in circumscription (see Bentham & Hooker, Engler and Wettstein system). In the classification system of Dahlgren the Primulales were in the superorder Primuliflorae (also called Primulanae). In the 1981 version of the Cronquist system it was an order placed in subclass Dilleniidae with the following circumscription: * order Primulales *: family Myrsinaceae *: family Primulaceae *: family Theophrastaceae The APG III system includes all the plants involved in the (expanded) order Ericales The Ericales are a large and diverse order of flowering plants in the asterid group of the eudicots. Well-known and economically important members of this order include tea and ornamental camellias, persimmon, ebony, blueberry, cranberry, l .... References {{Authority control Historically recognized angiosperm orders ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theiflorae
Theales is a botanical name at the rank of order. Early classifications such as that of Dahlgren placed the Theales in the superorder Theiflorae (also called Theanae). The name was used by the Cronquist system for an order placed in subclass Dilleniidae, in the 1981 version of the system the circumscription was: * order Theales *: family Ochnaceae *: family Sphaerosepalaceae *: family Dipterocarpaceae *: family Caryocaraceae *: family Theaceae *: family Actinidiaceae *: family Scytopetalaceae *: family Pentaphylacaceae *: family Tetrameristaceae *: family Pellicieraceae *: family Oncothecaceae *: family Marcgraviaceae *: family Quiinaceae *: family Elatinaceae *: family Paracryphiaceae *: family Medusagynaceae *: family Clusiaceae In the APG II system (used here) the taxa involved are assigned to many different orders, among which are Ericales, Malvales, and Malpighiales The Malpighiales comprise one of the largest Order (biology), orders of flowering plants. The order is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Violiflorae
Violales is a botanical name of an order of flowering plants and takes its name from the included family Violaceae; it was proposed by Lindley (1853). The name has been used in several systems, although some systems used the name Parietales for similar groupings. In the 1981 version of the influential Cronquist system, order Violales was placed in subclass Dilleniidae with a circumscription consisting of the families listed below. Some classifications such as that of Dahlgren placed the Violales in the superorder Violiflorae (also called Violanae). The Angiosperm Phylogeny Group (APG) system does not recognize order Violales; Violaceae is placed in order Malpighiales and the other families are reassigned to various orders as indicated. * order Violales Perleb 1826 *: family Achariaceae → order Malpighiales *: family Ancistrocladaceae → order Caryophyllales *: family Begoniaceae → order Cucurbitales *: family Bixaceae → order Malvales *: family Caricaceae → order Bras ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malviflorae
The Malvales are an order of flowering plants. As circumscribed by APG II-system, the order includes about 6000 species within nine families. The order is placed in the eurosids II, which are part of the eudicots. The plants are mostly shrubs and trees; most of its families have a cosmopolitan distribution in the tropics and subtropics, with limited expansion into temperate regions. An interesting distribution occurs in Madagascar, where three endemic families of Malvales (Sphaerosepalaceae, Sarcolaenaceae and Diegodendraceae) occur. Many species of Malvaceae, ''sensu lato'' (in the broad sense), are valued for their wood, with that of ''Ochroma'' (balsa) being known for its lightness, and that of ''Tilia'' (lime, linden, or basswood) as a popular wood for carving. Fruit of the cacao tree (''Theobroma cacao'') are used as an ingredient for chocolate. Kola nuts (genus ''Cola'') are notable for their high caffeine content and were commonly used in the past in preparation of variou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
