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Chrysomyxa Ledicola
''Chrysomyxa ledicola'' is a plant pathogen responsible for the disease large-spored spruce-Labrador tea rust. It affects white spruce, black spruce, Sitka spruce, Engelmann spruce, and Labrador-tea. It is also the cause of the orange goo that covered the Iñupiat village of Kivalina, Alaska Kivalina ( ik, Kivalliñiq) is a city and village in Northwest Arctic Borough, Alaska, United States. The population was 377 at the 2000 census and 374 as of the 2010 census. The island on which the village lies is threatened by rising sea ... in the summer of 2011. References External links * * USDA ARS Fungal Database ledicola Fungal plant pathogens and diseases Fungi described in 1893 {{Teliomycotina-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kivalina, Alaska
Kivalina ( ik, Kivalliñiq) is a city and village in Northwest Arctic Borough, Alaska, United States. The population was 377 at the 2000 census and 374 as of the 2010 census. The island on which the village lies is threatened by rising sea levels and coastal erosion caused by climate change. , it is predicted that the island will be inundated by 2025. In addition to well-publicized impacts of climate change, the Village of Kivalina has been a party in several environmentally related court cases. History Kivalina is an Inupiat community first reported as "Kivualinagmut" in 1847 by Lt. Lavrenty Zagoskin of the Imperial Russian Navy. It has long been a stopping place for travelers between Arctic coastal areas and Kotzebue Sound communities. Three bodies and artifacts were found in 2009 representing the Ipiutak culture, a pre- Thule, non-whaling civilization that disappeared over a millennium ago. It is the only village in the region where people hunt the bowhead whale. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nils Gustaf Von Lagerheim
Nils Gustaf Lagerheim (1860–1926) was a Swedish botanist, mycologist, phycologist, and pteridologist. Today, he is best remembered as one of the chief architects of pollen analysis as a tool in botany, alongside his student Ernst Post. In 1895, botanists Giovanni Battista De Toni and Robert Hippolyte Chodat published ''Lagerheimia'', which is a genus of green algae in the family Oocystaceae Oocystaceae is a family of green algae, in the order Chlorellales. The type genus is '' Oocystis''. List of genera , AlgaeBase accepted the following genera: *'' Amphikrikos'' Korshikov – 6 species *'' Catenocystis'' F.Hindák – 2 specie ..., named in his honour. Then in 1940, Boedijn published ''Lagerheimiella'', another green algae genus. References {{DEFAULTSORT:Lagerheim, Nils Gustaf Swedish botanists Swedish mycologists Swedish phycologists 1860 births 1926 deaths ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picea Glauca
''Picea glauca'', the white spruce, is a species of spruce native to the northern temperate and boreal forests in North America. ''Picea glauca'' is native from central Alaska all through the east, across southern/central Canada to the Avalon Peninsula in Newfoundland, and south to Montana, Minnesota, Wisconsin, Michigan, Upstate New York and Vermont, along with the mountainous and immediate coastal portions of New Hampshire and Maine, where temperatures are just barely cool and moist enough to support it. There is also an isolated population in the Black Hills of South Dakota and Wyoming. It is also known as Canadian spruce, skunk spruce, cat spruce, Black Hills spruce, western white spruce, Alberta white spruce, and Porsild spruce. Description The white spruce is a large evergreen conifer which normally grows to tall, but can grow up to tall with a trunk diameter of up to . The bark is thin and scaly, flaking off in small circular plates across. The crown is narrowconical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picea Mariana
''Picea mariana'', the black spruce, is a North American species of spruce tree in the pine family. It is widespread across Canada, found in all 10 provinces and all 3 territories. It is the official tree of the province of Newfoundland and Labrador and is that province's most numerous tree. The range of the black spruce extends into northern parts of the United States: in Alaska, the Great Lakes region, and the upper Northeast. It is a frequent part of the biome known as taiga or boreal forest.. The Latin specific epithet ''mariana'' means “of the Virgin Mary”. Description ''P. mariana'' is a slow-growing, small upright evergreen coniferous tree (rarely a shrub), having a straight trunk with little taper, a scruffy habit, and a narrow, pointed crown of short, compact, drooping branches with upturned tips. Through much of its range it averages tall with a trunk diameter at maturity, though occasional specimens can reach tall and diameter. The bark is thin, scaly, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picea Sitchensis
''Picea sitchensis'', the Sitka spruce, is a large, coniferous, evergreen tree growing to almost tall, with a trunk diameter at breast height that can exceed 5 m (16 ft). It is by far the largest species of spruce and the fifth-largest conifer in the world (behind giant sequoia, coast redwood, kauri, and western red cedar), and the third-tallest conifer species (after coast redwood and coast Douglas fir). The Sitka spruce is one of the few species documented to exceed in height. Its name is derived from the community of Sitka in southeast Alaska, where it is prevalent. Its range hugs the western coast of Canada and the US, continuing south into northernmost California. Description The bark is thin and scaly, flaking off in small, circular plates across. The inner bark is reddish-brown. The crown is broad conic in young trees, becoming cylindric in older trees; old trees may not have branches lower than . The shoots are very pale buff-brown, almost white, and glab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picea Engelmannii
''Picea engelmannii'', with the common names Engelmann spruce, white spruce, mountain spruce, and silver spruce, is a species of spruce native to western North America. It is mostly a high-altitude mountain tree but also appears in watered canyons. Description ''Picea engelmannii'' is a medium-sized to large evergreen tree growing to tall, exceptionally to tall, and with a trunk diameter of up to . The reddish bark is thin and scaly, flaking off in small circular plates across. The crown is narrow conic in young trees, becoming cylindric in older trees. The shoots are buff-brown to orange-brown, usually densely pubescent, and with prominent pulvini. The leaves are needle-like, long, flexible, rhombic in cross-section, glaucous blue-green above with several thin lines of stomata, and blue-white below with two broad bands of stomata. The needles have a pungent odour when crushed. Purple cones of about 1 cm appear in spring, releasing yellow pollen when windy. The cones are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhododendron Tomentosum
''Rhododendron tomentosum'' ( syn. ''Ledum palustre''), commonly known as marsh Labrador tea, northern Labrador tea or wild rosemary, is a flowering plant in the subsection '' Ledum'' of the large genus '' Rhododendron'' in the family Ericaceae. Description It is a low shrub growing to 50 cm (rarely up to 120 cm) tall with evergreen leaves 12–50 mm long and 2–12 mm broad. The flowers are small, with a five-lobed white corolla, and produced several together in a corymb 3–5 cm diameter. They emit strong smell to attract bees and other pollinating insects. Distribution and habitat It grows in northern latitudes in North America, Greenland, Canada, and Alaska, in Europe in the northern and central parts, and in Asia south to northern China, Korea and Japan. It grows in peaty soils, shrubby areas, moss and lichen tundra. Chemical compounds All parts of the plant contain poisonous terpenes that affect the central nervous system. First symptoms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iñupiat
The Iñupiat (or Inupiat, Iñupiaq or Inupiaq;) are a group of Alaska Natives, whose traditional territory roughly spans northeast from Norton Sound on the Bering Sea to the northernmost part of the Canada–United States border. Their current communities include 34 villages across ''Iñupiat Nunaat'' (Iñupiaq lands) including seven Alaskan villages in the North Slope Borough, affiliated with the Arctic Slope Regional Corporation; eleven villages in Northwest Arctic Borough; and sixteen villages affiliated with the Bering Straits Regional Corporation,"Inupiaq (Inupiat)—Alaska Native Cultural Profile." ''www.nnlm.nlm.nih.gov'' ''National Network of Libraries of Medicine.'' Retrieved 4 Dec 2013. and often claim to be the first people of the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chrysomyxa
''Chrysomyxa'' is a genus of rust fungi in the family Coleosporiaceae. The genus, widespread in the Northern Hemisphere, contains about 23 species. Rust fungi in the genus ''Chrysomyxa'' occur in boreal forests of the northern hemisphere on Pinaceae, (mostly ''Picea''), and most species alternate to angiosperm hosts in the Ericaceae The Ericaceae are a family of flowering plants, commonly known as the heath or heather family, found most commonly in acidic and infertile growing conditions. The family is large, with c.4250 known species spread across 124 genera, making it th ....Crane, P.E. 2001. Morphology, taxonomy, and nomenclature of the ''Chrysomyxa ledi'' complex and related rust fungi on spruce and Ericaceae in North America and Europe. Can. J. Bot. 79:957–982. Species *'' Chrysomyxa abietis'' *'' Chrysomyxa arctostaphyli'' *'' Chrysomyxa cassandrae'' *'' Chrysomyxa chiogenis'' *'' Chrysomyxa diebuensis'' *'' Chrysomyxa empetri'' *'' Chrysomyxa expansa'' *'' Chrysomyxa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungal Plant Pathogens And Diseases
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from the other eukaryotic kingdoms, which by one traditional classification include Plantae, Animalia, Protozoa, and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the ''Eumycota'' (''true f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
