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Orontioideae
Orontioideae is a subfamily of flowering plants in the family Araceae The Araceae are a family of monocotyledonous flowering plants in which flowers are borne on a type of inflorescence called a spadix. The spadix is usually accompanied by, and sometimes partially enclosed in, a spathe (or leaf-like bract). Also .... The subfamily consists of three genera namely, '' Lysichiton'' (one to two species of skunk cabbage from North America and Asia), '' Orontium'' (golden club, one living species from eastern North America and two extinct species known from fossils), and '' Symplocarpus'' (several species of skunk cabbage from North America and Asia). Characteristics of Orontioideae include medium-sized pollen grains and subterranean stems. Species in the subfamily have a base chromosome number of X=13. References * Mayo, S.J., Bogner, J., and Boyce, J.C. (1998) ''The genera of Araceae project'', Acta Botanica Yunnanica. * Bown, Deni (2000). ''Aroids: Plants of the Arum Family LL ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araceae
The Araceae are a family of monocotyledonous flowering plants in which flowers are borne on a type of inflorescence called a spadix. The spadix is usually accompanied by, and sometimes partially enclosed in, a spathe (or leaf-like bract). Also known as the arum family, members are often colloquially known as aroids. This family of 114 genera and about 3,750 known species is most diverse in the New World tropics, although also distributed in the Old World tropics and northern temperate regions. Description Within the Araceae, species are often rhizomatous or tuberous; many are epiphytic, creeping lianas or vining plants, and the leaves and tissues of the entire plant nearly always contains irritating calcium oxalate crystals or raphides, in varying degrees. The foliage can vary considerably from species to species. The majority of species produce an inflorescence consisting of a spadix (which some compare to a corn cob, in appearance), which is nearly always surrounded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lysichiton
''Lysichiton'' is a genus in the family Araceae. These plants are known commonly as skunk cabbage or less often as swamp lantern. The spelling ''Lysichitum'' is also found. The genus has two species, one found in north-east Asia (Japan and Russian Far East), the other in north-west America (Aleutians to Santa Cruz County in California). Description ''Lysichiton'' has flowers which are typical of those of the family to which it belongs (the arum family or Araceae). The individual flowers are small and are tightly packed on a fleshy stem called a spadix which is surrounded by a white or yellow but otherwise leaf-like bract called a spathe. The spathe is hooded or boat-shaped at the top. ''Lysichiton'' has flowers with both male and female parts present (bisexual), unlike many other aroids. After fertilization, the green fruits become embedded in the spadix; each fruit usually has two seeds but may have up to four. Several large leaves appear either just before flowering or soon a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lysichiton Camtschatcensis
''Lysichiton camtschatcensis'', common name Asian skunk cabbage, white skunk cabbage, Far Eastern swamp lantern or Japanese swamp lantern, is a plant found in swamps and wet woods, along streams and in other wet areas of the Kamchatka Peninsula, the Kuril Islands, Sakhalin and northern Japan. The common name "skunk cabbage" is used for the genus ''Lysichiton'', which includes ''L. americanus'', the western skunk cabbage, noted for its unpleasant smell. The Asian skunk cabbage is more variable: plants have been reported in different cases to smell disgusting, not at all, and sweet. In Japanese it is known as ''mizubashō'' (lit. "water-banana") from a supposed similarity to the Japanese banana, a name with poetic rather than malodorous associations.As described for example in photo handbook , p. 666 It is not closely related to the true cabbage. Description It is a robust herbaceous perennial growing to tall and wide, with strongly veined, glossy leaves long. In early sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orontium
''Orontium'' , sometimes called golden-club, is a genus of flowering plants in the family Araceae. The single living species in the genus is ''Orontium aquaticum'', while the two other described species, '' Orontium mackii'' and '' Orontium wolfei'', are known from fossils. ''Orontium mackii'' is the geologically oldest species described, with fossils of the species being found in the Jose Creek member of the McRae Formation in New Mexico. The formation is dated to the Late Cretaceous, possibly the Maastrichtian. The species is noted for having a simpler vein structure in the leaves then is seen in either ''O. wolfei'' or ''O. aquaticum''. Two of the outcrops where the species was found are preserved volcanic ash beds which hosted long-term standing water. However, a third outcrop is that of a well-drained floodplain with no evidence of standing water. This indicates the possibility that ''O. mackii'' was not an obligate hydrophyte. The second fossil species ''O. wolfei'' is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Symplocarpus
''Symplocarpus'' is a genus of flowering plants in the family Araceae, native to United States, Canada and eastern Asia. The genus is characterized by having large leaves and deep root systems with contractile roots used for changing the plant's level with the ground. ''Symplocarpus'' species grow from a rhizome and their leaves release a foul odor when crushed. The best known species is ''Symplocarpus foetidus'', commonly called "skunk cabbage". Species # '' Symplocarpus egorovii'' N.S.Pavlova & V.A.Nechaev - Primorye region of Russia # ''Symplocarpus foetidus ''Symplocarpus foetidus'', commonly known as skunk cabbage or eastern skunk cabbage (also swamp cabbage, clumpfoot cabbage, or meadow cabbage, foetid pothos or polecat weed), is a low-growing plant that grows in wetlands and moist hill slopes of ...'' (L.) Salisb. ex W.P.C.Barton - southeastern Canada and northeastern United States, from Tennessee to Minnesota and Nova Scotia # '' Symplocarpus nabekuraensis'' Otsuka & ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the more recent of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', the Latin word for the white limestone known as chalk. The chalk of northern France and the white cliffs of south-eastern England date from the Cretaceous Period. Climate During the Late Cretaceous, the climate was warmer than present, although throughout the period a cooling trend is evident. The tropics became restricted to equatorial regions and northern latitudes experienced markedly more seasonal climatic conditions. Geography Due to plate tectonics, the Americas were gradually moving westward, causing the Atlantic Ocean to expand. The Western Interior Seaway divided North America into eastern and western halves; Appalachia and Laramidia. India maintained a northward course towards Asia. In the Southern Hemisphere, Aus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holocene
The Holocene () is the current geologic time scale, geological epoch, beginning approximately 11,700 years ago. It follows the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene together form the Quaternary period. The Holocene is an interglacial period within the ongoing Ice age, glacial cycles of the Quaternary, and is equivalent to Marine isotope stages, Marine Isotope Stage 1. The Holocene correlates with the last maximum axial tilt towards the Sun of the Earth#Axial tilt and seasons, Earth's obliquity. The Holocene corresponds with the rapid proliferation, growth, and impacts of the human species worldwide, including Recorded history, all of its written history, technological revolutions, development of major civilizations, and overall significant transition towards urban culture, urban living in the present. The human impact on modern-era Earth and its ecosystems may be considered of global significance for th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subfamily
In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily names with "-oideae", and zoological subfamily names with "-inae". Detarioideae is an example of a botanical subfamily. Detarioideae is a subdivision of the family Fabaceae (legumes), containing 84 genera. Stevardiinae is an example of a zoological subfamily. Stevardiinae is a large subdivision of the family Characidae, a diverse clade In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach t ... of freshwater fish. See also * International Code of Nomenclature for algae, fungi, and plants * International Code of Zoological Nomenclature * Rank (botany) * Rank (zoolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
