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Aristolochiaceae
The Aristolochiaceae () are a family, the birthwort family, of flowering plants with seven genera and about 400 known species belonging to the order Piperales. The type genus is ''Aristolochia'' L. Description They are mostly perennial, herbaceous plants, shrubs, or lianas. The membranous, cordate simple leaves are spread out, growing alternately along the stem on leaf stalks. The margins are commonly entire. No stipules are present. The bizarre flowers are large to medium-sized, growing in the leaf axils. They are bilaterally or radially symmetrical. Classification Aristolochiaceae are magnoliids, a basal group of angiosperms which are not part of the large categories of monocots or eudicots. As of APG IV (2016), the former families Hydnoraceae and Lactoridaceae are included, because exclusion would make Aristolochiaceae in the traditional sense paraphyletic. Some newer classification schemes, such as the update of the Angiosperm Phylogeny Group, place the family Aristol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lactoris
''Lactoris fernandeziana'' is a flowering shrub endemic to the cloud forest of ''Masatierra'' — Robinson Crusoe Island, of the Juan Fernández Islands archipelago of Chile. It is the only extant species in the genus ''Lactoris''. Taxonomy The species is now included in Aristolochiaceae following APG IV (2016). Morphological data are not clear concerning the classification of ''Lactoris'', but molecular data place it in the Aristolochiaceae. In the fossil record, pollen has been found which seems to be related to the living ''Lactoris'' species. Habitat and conservation ''Lactoris fernandeziana'' seems to be wind-pollinated. The wild population of about 1000 plants has low genetic diversity, and grows on foggy and rainy slopes, usually as an understory plant but sometimes in full sun. Cultivation of seedlings has generally been unsuccessful, although cuttings have worked better and better knowledge of preferred growing conditions may make cultivation easier. See also *Fer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydnoraceae
Hydnoroideae is a subfamily of parasitic flowering plants in the order Piperales. Traditionally, and as recently as the APG III system it given family rank under the name Hydnoraceae. It is now submerged in the Aristolochiaceae. It contains two genera, ''Hydnora'' and ''Prosopanche'': * ''Prosopanche'' is native to Central and South America ; * ''Hydnora'' can be found in semi-arid to desert regions of Africa, the Arabian Peninsula, and Madagascar. Members of this subfamily have been described as the strangest plants in the world. Description The most striking aspect of the Hydnoroideae is probably the complete absence of leaves (not even in modified forms such as scales). Some species are mildly thermogenic (capable of producing heat), presumably as a means of dispersing their scent. Morphology in pictures Image:HydnoraJohannisYoungParasiticAttachmentsWadMedaniSudanMusselman.jpg, ''Hydnora johannis'', young plant in Um Barona, Wad Medani, Sudan. Image:HydnoraTricepsRootsGems ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydnoroideae
Hydnoroideae is a subfamily of parasitic flowering plants in the order Piperales. Traditionally, and as recently as the APG III system it given family rank under the name Hydnoraceae. It is now submerged in the Aristolochiaceae. It contains two genera, ''Hydnora'' and ''Prosopanche'': * ''Prosopanche'' is native to Central and South America ; * ''Hydnora'' can be found in semi-arid to desert regions of Africa, the Arabian Peninsula, and Madagascar. Members of this subfamily have been described as the strangest plants in the world. Description The most striking aspect of the Hydnoroideae is probably the complete absence of leaves (not even in modified forms such as scales). Some species are mildly thermogenic (capable of producing heat), presumably as a means of dispersing their scent. Morphology in pictures Image:HydnoraJohannisYoungParasiticAttachmentsWadMedaniSudanMusselman.jpg, ''Hydnora johannis'', young plant in Um Barona, Wad Medani, Sudan. Image:HydnoraTricepsRootsGems ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lactoridoideae
''Lactoris fernandeziana'' is a flowering shrub endemic to the cloud forest of ''Masatierra'' — Robinson Crusoe Island, of the Juan Fernández Islands archipelago of Chile. It is the only extant species in the genus ''Lactoris''. Taxonomy The species is now included in Aristolochiaceae following APG IV (2016). Morphological data are not clear concerning the classification of ''Lactoris'', but molecular data place it in the Aristolochiaceae. In the fossil record, pollen has been found which seems to be related to the living ''Lactoris'' species. Habitat and conservation ''Lactoris fernandeziana'' seems to be wind-pollinated. The wild population of about 1000 plants has low genetic diversity, and grows on foggy and rainy slopes, usually as an understory plant but sometimes in full sun. Cultivation of seedlings has generally been unsuccessful, although cuttings have worked better and better knowledge of preferred growing conditions may make cultivation easier. See also *Fer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piperales
Piperales is an order of flowering plants (4,170 recognized species). It necessarily includes the family Piperaceae but other taxa have been included or disincluded variously over time. Well-known plants which may be included in this order include black pepper, kava, pepper elder, lizard's tail, birthwort, and wild ginger. Classification APG system In the APG IV system, of 2016, this order is placed in the clade magnoliids and is circumscribed as follows: *order Piperales *: family Aristolochiaceae (including Asaraceae, Hydnoraceae and Lactoridaceae) *: family Piperaceae *: family Saururaceae This is an expansion from the APG system, of 1998, which used the same placement (in the magnoliids) but used this circumscription: * order Piperales'' *: family Aristolochiaceae *: family Lactoridaceae *: family Piperaceae *: family Saururaceae Earlier systems The Cronquist system, of 1981, placed the order in the subclass Magnoliidae of class Magnoliopsida dicotyledonsand used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aristolochia
''Aristolochia'' () is a large plant genus with over 500 species that is the type genus of the family Aristolochiaceae. Its members are commonly known as birthwort, pipevine or Dutchman's pipe and are widespread and occur in the most diverse climates. Some species, like '' A. utriformis'' and '' A. westlandii'', are threatened with extinction. ''Isotrema'' is usually included here, but might be a valid genus. If so, it contains those species with a three-lobed calyx. Description ''Aristolochia'' is a genus of evergreen and deciduous lianas (woody vines) and herbaceous perennials. The smooth stem is erect or somewhat twining. The simple leaves are alternate and cordate, membranous, growing on leaf stalks. There are no stipules. The flowers grow in the leaf axils. They are inflated and globose at the base, continuing as a long perianth tube, ending in a tongue-shaped, brightly colored lobe. There is no corolla. The calyx is one to three whorled, and three to six tooth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lactoridaceae
''Lactoris fernandeziana'' is a flowering shrub endemic (ecology), endemic to the cloud forest of Robinson Crusoe Island, ''Masatierra'' — Robinson Crusoe Island, of the Juan Fernández Islands archipelago of Chile. It is the only extant species in the genus ''Lactoris''. Taxonomy The species is now included in Aristolochiaceae following APG IV system, APG IV (2016). Morphological data are not clear concerning the classification of ''Lactoris'', but molecular data place it in the Aristolochiaceae. In the fossil record, pollen has been found which seems to be related to the living ''Lactoris'' species. Habitat and conservation ''Lactoris fernandeziana'' seems to be wind-pollinated. The wild population of about 1000 plants has low genetic diversity, and grows on foggy and rainy slopes, usually as an understory plant but sometimes in full sun. Cultivation of seedlings has generally been unsuccessful, although cuttings have worked better and better knowledge of preferred growin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asarum
''Asarum'' is a genus of plants in the birthwort family Aristolochiaceae, commonly known as wild ginger. ''Asarum'' is the genitive plural of the Latin ''āsa'' (an alternate form of ''āra'') meaning altar or sanctuary. Description ''Asarum'' is a genus of low-growing herbs distributed across the temperate zones of the Northern Hemisphere, with most species in East Asia (China, Japan, and Vietnam) and North America, and one species in Europe. Biogeographically, ''Asarum'' originated in Asia. They have characteristic kidney-shaped leaves, growing from creeping rhizomes, and bear small, axillary, brown or reddish flowers. The plant is called wild ginger because the rhizome tastes and smells similar to ginger root, but the two are not particularly related. The FDA warns against consuming ''Asarum'', as it is nephrotoxic and contains the potent carcinogen aristolochic acid. The birthwort family also contains the genus ''Aristolochia'', known for carcinogens. Wild ginger favor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saruma
''Saruma'' is a monotypic genus of flowering plants in the family Aristolochiaceae containing the single species ''Saruma henryi''.''Saruma''. Flora of China. It is to , where it occurs in , , , |
Aristolochiales
Aristolochiales is an order of flowering plants. It is not recognised in the APG or APG II systems, in which it is considered a synonym of Piperales. It also is not recognized in the Thorne system. In the Cronquist, Dahlgren, Goldberg and Reveal systems it is composed of a single family, the Aristolochiaceae. In the Hutchinson system the carnivorous Nepenthaceae (now placed in Caryophyllales) and the parasitic Cytinaceae (now placed in Malvales) and Hydnoraceae (now placed in Piperales) are also included. In the Melchior (aka Engler) system Hydnoraceae and Rafflesiaceae (including Cytinaceae Cytinaceae is a family of parasitic flowering plants. It comprises two genera, ''Cytinus'' and ''Bdallophytum'', totalling ten species. These two genera were formerly placed in the family Rafflesiaceae, order Malpighiales. When they were separat ...) are included in addition to Aristolochiaceae. Historically recognized angiosperm orders {{Piperales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aristolochia Californica
''Aristolochia californica'', the California pipevine, California Dutchman's-pipe, or California snakeroot is a perennial woody vine of western North America. Distribution and habitat The vine is endemic to northern California. It is native to the Sacramento Valley, northern Sierra Nevada foothills, San Francisco Bay Area, Northern Inner California Coast Ranges, southeastern Klamath Mountains. The plant grows along riparian streambank areas, in chaparral, oak woodland, and mixed evergreen forest habitats. It is found below in elevation. Description ''Aristolochia californica'' is a deciduous vine. It grows from rhizomes, to a length usually around , but can reach over . The twining trunk can become quite thick in circumference at maturity. It sends out new green heart-shaped leaves after it blooms. The bloom period is January through April. The plant produces large green to pale brown curving pipe-shaped flowers, with purple veins and a yellow to red lining. The U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
APG IV System
The APG IV system of flowering plant classification is the fourth version of a modern, mostly molecular-based, system of plant taxonomy for flowering plants (angiosperms) being developed by the Angiosperm Phylogeny Group (APG). It was published in 2016, seven years after its predecessor the APG III system was published in 2009, and 18 years after the first APG system was published in 1998. In 2009, a linear arrangement of the system was published separately; the APG IV paper includes such an arrangement, cross-referenced to the 2009 one. Compared to the APG III system, the APG IV system recognizes five new orders (Boraginales, Dilleniales, Icacinales, Metteniusales and Vahliales), along with some new families, making a total of 64 angiosperm orders and 416 families. In general, the authors describe their philosophy as "conservative", based on making changes from APG III only where "a well-supported need" has been demonstrated. This has sometimes resulted in placements that a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
