NationMaster - Encyclopedia: Metasequoia

Metasequoia glyptostroboides (Dawn Redwood) is a fast growing tree in the conifer family Cupressaceae (Taxaceae or Taxodiaceae by others)native to the Sichuan-Hubei region of China. It is the only living species in the ancient redwood genus Metasequoia, but three fossil species are known. Download high resolution version (1536x2048, 1902 KB)Dawn Redwood on the campus of San Jose State University. ... The conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. ... Image File history File links Status_iucn2. ... . ... The IUCN Red List of Threatened Species (also known as the IUCN Red List and Red Data List), created in 1963, is the worlds most comprehensive inventory of the global conservation status of plant and animal species and can be found here. ... Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... Divisions Green algae Chlorophyta Charophyta Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) â€ Rhyniophyta - rhyniophytes â€ Zosterophyllophyta - zosterophylls Lycopodiophyta - clubmosses â€ Trimerophytophyta - trimerophytes Pteridophyta - ferns and horsetails Seed plants (spermatophytes) â€ Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants... Orders & Families Cordaitales â€ Pinales Pinaceae - Pine family Araucariaceae - Araucaria family Podocarpaceae - Yellow-wood family Sciadopityaceae - Umbrella-pine family Cupressaceae - Cypress family Cephalotaxaceae - Plum-yew family Taxaceae - Yew family Vojnovskyales â€ Voltziales â€ The conifers, division Pinophyta, also known as division Coniferae, are one of 13 or 14 division level taxa within the... Orders & Families Cordaitales â€ Pinales Pinaceae - Pine family Araucariaceae - Araucaria family Podocarpaceae - Yellow-wood family Sciadopityaceae - Umbrella-pine family Cupressaceae - Cypress family Cephalotaxaceae - Plum-yew family Taxaceae - Yew family Vojnovskyales â€ Voltziales â€ The conifers, division Pinophyta, also known as division Coniferae, are one of 13 or 14 division level taxa within the... Families Pinaceae, pine family Araucariaceae, araucaria family Podocarpaceae, yellow-wood family Phyllocladaceae Sciadopityaceae, umbrella-pine family Cupressaceae, cypress family Cephalotaxaceae, plum-yew family Taxaceae, yew family The Order Pinales in the Division Pinophyta, Class Pinopsida comprises all the extant conifers. ... Genera Actinostrobus Athrotaxis Austrocedrus Callitris - Cypress-pine Callitropsis - Cypress * (Cupressus) Calocedrus - Incense-cedar Chamaecyparis - Cypress Cryptomeria - Sugi Cunninghamia - Cunninghamia Cupressus - Cypress Diselma - Diselma Fitzroya - Alerce Fokienia - Fujian Cypress Glyptostrobus - Chinese Swamp Cypress Juniperus - Juniper Libocedrus Metasequoia - Dawn Redwood Microbiota - Microbiota Neocallitropsis Papuacedrus * (Libocedrus) Pilgerodendron * (Libocedrus) Platycladus - Chinese Arborvitae Sequoia - Coast... In biology, binomial nomenclature is the formal method of naming species. ... For other uses, see Tree (disambiguation). ... Orders & Families Cordaitales â€ Pinales Pinaceae - Pine family Araucariaceae - Araucaria family Podocarpaceae - Yellow-wood family Sciadopityaceae - Umbrella-pine family Cupressaceae - Cypress family Cephalotaxaceae - Plum-yew family Taxaceae - Yew family Vojnovskyales â€ Voltziales â€ The conifers, division Pinophyta, also known as division Coniferae, are one of 13 or 14 division level taxa within the... Genera Actinostrobus Athrotaxis Austrocedrus Callitris - Cypress-pine Callitropsis - Cypress * (Cupressus) Calocedrus - Incense-cedar Chamaecyparis - Cypress Cryptomeria - Sugi Cunninghamia - Cunninghamia Cupressus - Cypress Diselma - Diselma Fitzroya - Alerce Fokienia - Fujian Cypress Glyptostrobus - Chinese Swamp Cypress Juniperus - Juniper Libocedrus Metasequoia - Dawn Redwood Microbiota - Microbiota Neocallitropsis Papuacedrus * (Libocedrus) Pilgerodendron * (Libocedrus) Platycladus - Chinese Arborvitae Sequoia - Coast... Genera Taxaceae sensu stricto Taxus Pseudotaxus Austrotaxus — Cephalotaxaceae Torreya Amentotaxus Cephalotaxus The family Taxaceae, commonly called the yew family, includes three genera and about 7 to 12 species of coniferous plants, or in other interpretations (see Classification, below), six genera and about 30 species. ... The Taxodiaceae was at one time regarded as a distinct plant family comprising the following ten genera of coniferous trees: Athrotaxis Cryptomeria Cunninghamia Glyptostrobus Metasequoia Sciadopitys Sequoia Sequoiadendron Taiwania Taxodium However, recent research has shown that the Taxodiaceae, with the single exception of Sciadopitys, should be merged into the Family... (Chinese: ; pinyin: ; Wade-Giles: SzÅ4-chuan1; Postal map spelling: Szechwan and Szechuan) is a province in the central-western China with its capital at Chengdu. ... Hubei (Chinese: æ¹–åŒ—; Hanyu Pinyin: ; Wade-Giles: Hu-pei; Postal System Pinyin: Hupeh) is a central province of the Peoples Republic of China. ... In biology, a species is one of the basic units of biodiversity. ... For other uses of the word, please see Genus (disambiguation). ... Three small ammonite fossils, each approximately 1. ...

While the bark and foliage are similar to another closely related redwood genus Sequoia, Metasequoia differs from the California redwood in that it is deciduous like Taxodium distichum (Bald Cypress), and like that species, older specimens form wide buttresses on the lower trunk. It is a fast-growing tree to 40-45 m tall and 2 m trunk diameter in cultivation so far (with the potential to grow to even greater heights). The leaves are opposite, 1-3 cm long, and bright fresh green, turning a foxy red-brown in fall. The cones are globose to ovoid, 1.5-2.5 cm in diameter with 16-28 scales, arranged in opposite pairs in four rows, each pair at right angles to the adjacent pair; they mature in about 8-9 months after pollination. The pollen cones are 5-6 mm long, produced on long spikes in early spring; they are only produced on trees growing in regions with hot summers. Download high resolution version (927x538, 102 KB)Dawn Redwood foliage - photo User:MPF File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Download high resolution version (927x538, 102 KB)Dawn Redwood foliage - photo User:MPF File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Binomial name Sequoia sempervirens (D. Don) Endl. ... Deciduous means temporary or tending to fall off (deriving from the Latin word decidere, to fall off). ... Binomial name Taxodium distichum (L.) Rich. ... Mature female European Black Pine cone Male cones of a pine A cone (in formal botanical usage: strobilus, plural strobili) is an organ on plants in the division Pinophyta (conifers) that contains the reproductive structures. ... SEM image of pollen grains from a variety of common plants: sunflower (Helianthus annuus), morning glory (Ipomoea purpurea), prairie hollyhock (Sidalcea malviflora), oriental lily (Lilium auratum), evening primrose (Oenothera fruticosa), and castor bean (Ricinus communis). ...

Metasequoia was first described as a fossil from the Mesozoic Era by Shigeru Miki in 1941, but in 1944 a small stand of an unidentified tree was discovered in China in Modaoxi by Zhan Wang; due to World War II, these were not studied further until 1946 and only finally described as a new living species of Metasequoia in 1948 by Cheng Wan Chun and Hu Hsen Hsu. In 1948 the Arnold Arboretum of Harvard University sent an expedition to collect seeds and, soon after, seedling trees were distributed to various universities and arboreta worldwide for growth trials. The Mesozoic Era is one of three geologic eras of the Phanerozoic eon. ... For the movie, see 1941 (film). ... 1944 (MCMXLIV) was a leap year starting on Saturday. ... Combatants Allied powers: China France Great Britain Soviet Union United States and others Axis powers: Germany Italy Japan and others Commanders Chiang Kai-shek Charles de Gaulle Winston Churchill Joseph Stalin Franklin Roosevelt Adolf Hitler Benito Mussolini Hideki TÅjÅ Casualties Military dead: 17,000,000 Civilian dead: 33,000... 1946 (MCMXLVI) was a common year starting on Tuesday. ... 1948 (MCMXLVIII) was a leap year starting on Thursday (the link is to a full 1948 calendar). ... 1948 (MCMXLVIII) was a leap year starting on Thursday (the link is to a full 1948 calendar). ... The Arnold Arboretum is one of the worlds finest research arboretums. ... Harvard University (incorporated as The President and Fellows of Harvard College) , is a private university in Cambridge, Massachusetts, USA. Founded in 1636,[1] Harvard is the oldest institution of higher learning still operating in the United States. ...

In the late 1980s, it was discovered that many of the second generation trees in cultivation suffered from inbreeding depression (extremely low genetic variability) which could lead to increased susceptibility to disease and reproductive failure. This was because most of the trees were grown from seeds and cuttings derived from as few as three trees that the Arnold Arboretum had used as its source. More widespread seed-collecting expeditions in China in the 1990s sought to resolve this problem and restore genetic diversity to cultivated Metasequoia. It has been suggested that Refractory disease be merged into this article or section. ...

Metasequoia has proved an easy tree to grow in temperate regions, and is now widely planted as an ornamental tree. Planted specimens have already reached 25-40 m in height and 1-1.3 m in diameter, despite being in cultivation for under 60 years. This rapid rate of growth has led to consideration for using the tree in forestry plantations. A decidous beech forest in Slovenia. ... // This article is about crop plantations. ...

Prehistory

Metasequoia redwood fossils are known from many areas in the Northern Hemisphere; over 20 fossil species have been named (some are even identified as the genus Sequoia), but are now treated in just three species, M. foxii, M. milleri, and M. occidentalis (Farjon 2005). During the Paleocene-Eocene Thermal Maximum, extensive forests of Metasequoia occurred as far north as Axel Heiberg Island (northern Canada) at around 80°N latitude. Large petrified trunks and stumps of the extinct Metasequoia occidentalis (sometimes identified as Sequoia occidentalis) also make up the major portion of Tertiary fossil plant material in the badlands of western North Dakota in the United States. Climate change during the last 65 million years. ... Axel Heiberg Island within Nunavut Closeup of Axel Heiberg Island Satellite photo montage of Axel Heilberg Island Axel Heiberg Island is the 31st largest island in the world and Canadas 7th largest island. ... Official language(s) English Capital Bismarck Largest city Fargo Area Ranked 19th - Total 70,762 sq mi (183,272 kmÂ²) - Width 210 miles (340 km) - Length 340 miles (545 km) - % water 2. ...

Encyclopedia > Metasequoia

Prehistory

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