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Rhododendron Subsect. Ledum
''Ledum'' was a genus in the family Ericaceae, including 8 species of evergreen shrubs native to cool temperate and subarctic regions of the Northern Hemisphere and commonly known as Labrador tea. It is now recognised as a subsection of section Rhododendron, subgenus ''Rhododendron'', of the genus ''Rhododendron''. Description ''Ledum'' species often grow together with poisonous plants such as bog-laurel and bog-rosemary, but certain species (e.g. '' L. groenlandicum'' and '' L. palustre'') are easily distinguished by the distinctive rust coloured fuzz on the bottom of leaves. Taxonomy Reclassification into Rhododendron Recent genetic evidence has shown that the species previously treated in this genus are correctly placed in the genus ''Rhododendron'', where they are now treated as ''Rhododendron'' subsect. ''Ledum''. Because some of the species names used in ''Ledum'' could not be used in ''Rhododendron'' (the names already having been used for other species already in thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ledum Glandulosum
''Rhododendron columbianum'', commonly known as western Labrador tea, swamp tea, or muskeg tea, is a shrub that is widespread in the western United States and in western Canada, reported from British Columbia, Alberta, Washington, Oregon, Idaho, California, Montana, Wyoming, Utah, Nevada, and Colorado. It grows in wet places from sea level up to . It was formerly known as ''Ledum columbianum''. Its origins date back to the late Pliocene. Description ''Rhododendron columbianum'' is a shrub up to tall, spreading by means of underground rhizomes. The evergreen leaves are ovate to lanceolate, fragrant when crushed. Flowers are white to cream, borne in groups of 10 to 35. The leaves grow very close to the stalk and their bottoms bear tiny white hairs. Taxonomy History ''Rhododendron columbianum'' was originally named ''Ledum columbianum,'' so it appears as its former name in many texts''.'' In 2009 Kathleen A. Kron and Walter S. Judd deemed the morphology of genus ''Ledum'' alike e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction. Hybrids are not always intermediates between their parents (such as in blending inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridisation, which include genetic and morphological differences, differing times of fertility, mating behaviors and cues, and physiological rejection of sperm cells or the developing embryo. Some act before fertilization and others after it. Similar barriers exist in plants, with differences in flowering tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ledum Serpyllifolium
''Ledum'' was a genus in the family Ericaceae, including 8 species of evergreen shrubs native to cool temperate and subarctic regions of the Northern Hemisphere and commonly known as Labrador tea. It is now recognised as a subsection of section Rhododendron, subgenus ''Rhododendron'', of the genus ''Rhododendron''. Description ''Ledum'' species often grow together with poisonous plants such as bog-laurel and bog-rosemary, but certain species (e.g. '' L. groenlandicum'' and '' L. palustre'') are easily distinguished by the distinctive rust coloured fuzz on the bottom of leaves. Taxonomy Reclassification into Rhododendron Recent genetic evidence has shown that the species previously treated in this genus are correctly placed in the genus ''Rhododendron'', where they are now treated as ''Rhododendron'' subsect. ''Ledum''. Because some of the species names used in ''Ledum'' could not be used in ''Rhododendron'' (the names already having been used for other species already in this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ledum Maximum
''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 of overdo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ledum Macrophyllum
''Ledum'' was a genus in the family Ericaceae, including 8 species of evergreen shrubs native to cool temperate and subarctic regions of the Northern Hemisphere and commonly known as Labrador tea. It is now recognised as a subsection of section Rhododendron, subgenus ''Rhododendron'', of the genus ''Rhododendron''. Description ''Ledum'' species often grow together with poisonous plants such as bog-laurel and bog-rosemary, but certain species (e.g. '' L. groenlandicum'' and '' L. palustre'') are easily distinguished by the distinctive rust coloured fuzz on the bottom of leaves. Taxonomy Reclassification into Rhododendron Recent genetic evidence has shown that the species previously treated in this genus are correctly placed in the genus ''Rhododendron'', where they are now treated as ''Rhododendron'' subsect. ''Ledum''. Because some of the species names used in ''Ledum'' could not be used in ''Rhododendron'' (the names already having been used for other species already in this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhododendron Subulatum
''Rhododendron'' (; from Ancient Greek ''rhódon'' "rose" and ''déndron'' "tree") is a very large genus of about 1,024 species of woody plants in the heath family (Ericaceae). They can be either evergreen or deciduous. Most species are native to eastern Asia and the Himalayan region, but smaller numbers occur elsewhere in Asia, and in North America, Europe and Australia. It is the national flower of Nepal, the state flower of Washington and West Virginia in the United States, the state flower of Nagaland in India, the provincial flower of Jiangxi in China and the state tree of Sikkim and Uttarakhand in India. Most species have brightly colored flowers which bloom from late winter through to early summer. Azaleas make up two subgenera of ''Rhododendron''. They are distinguished from "true" rhododendrons by having only five anthers per flower. Species Description ''Rhododendron'' is a genus of shrubs and small to (rarely) large trees, the smallest species growing to tall, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ledum Idahoensis
''Ledum'' was a genus in the family Ericaceae, including 8 species of evergreen shrubs native to cool temperate and subarctic regions of the Northern Hemisphere and commonly known as Labrador tea. It is now recognised as a subsection of section Rhododendron, subgenus ''Rhododendron'', of the genus ''Rhododendron''. Description ''Ledum'' species often grow together with poisonous plants such as bog-laurel and bog-rosemary, but certain species (e.g. '' L. groenlandicum'' and '' L. palustre'') are easily distinguished by the distinctive rust coloured fuzz on the bottom of leaves. Taxonomy Reclassification into Rhododendron Recent genetic evidence has shown that the species previously treated in this genus are correctly placed in the genus ''Rhododendron'', where they are now treated as ''Rhododendron'' subsect. ''Ledum''. Because some of the species names used in ''Ledum'' could not be used in ''Rhododendron'' (the names already having been used for other species already in this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhododendron Hypoleucum
''Rhododendron'' (; from Ancient Greek ''rhódon'' "rose" and ''déndron'' "tree") is a very large genus of about 1,024 species of woody plants in the heath family (Ericaceae). They can be either evergreen or deciduous. Most species are native to eastern Asia and the Himalayan region, but smaller numbers occur elsewhere in Asia, and in North America, Europe and Australia. It is the national flower of Nepal, the state flower of Washington and West Virginia in the United States, the state flower of Nagaland in India, the provincial flower of Jiangxi in China and the state tree of Sikkim and Uttarakhand in India. Most species have brightly colored flowers which bloom from late winter through to early summer. Azaleas make up two subgenera of ''Rhododendron''. They are distinguished from "true" rhododendrons by having only five anthers per flower. Species Description ''Rhododendron'' is a genus of shrubs and small to (rarely) large trees, the smallest species growing to tall, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhododendron Diversipilosum
''Rhododendron'' (; from Ancient Greek ''rhódon'' "rose" and ''déndron'' "tree") is a very large genus of about 1,024 species of woody plants in the heath family (Ericaceae). They can be either evergreen or deciduous. Most species are native to eastern Asia and the Himalayan region, but smaller numbers occur elsewhere in Asia, and in North America, Europe and Australia. It is the national flower of Nepal, the state flower of Washington and West Virginia in the United States, the state flower of Nagaland in India, the provincial flower of Jiangxi in China and the state tree of Sikkim and Uttarakhand in India. Most species have brightly colored flowers which bloom from late winter through to early summer. Azaleas make up two subgenera of ''Rhododendron''. They are distinguished from "true" rhododendrons by having only five anthers per flower. Species Description ''Rhododendron'' is a genus of shrubs and small to (rarely) large trees, the smallest species growing to tall, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhododendron Groenlandicum
''Rhododendron groenlandicum'' (bog Labrador tea, muskeg tea, swamp tea, or in northern Canada, Hudson's Bay tea; formerly ''Ledum groenlandicum'' or ''Ledum latifolium'') is a flowering shrub with white flowers and evergreen leaves that is used to make a herbal tea. Description It is a low shrub growing to tall—rarely up to —with evergreen leaves long and broad. The leaves are wrinkled on top, densely hairy white to red-brown underneath, and have a leathery texture, curling at the edges. The tiny white flowers grow in hemispherical clusters and are very fragrant and sticky. Distribution and habitat It is reported from Greenland, as well as from every province and territory in Canada and in the northeastern and northwestern United States (New England, New York, Pennsylvania, Michigan, Wisconsin, Minnesota, Idaho, Washington, and Alaska). It grows in bogs, muskegs, and open tundra, as well as occasionally on wet shores and rocky alpine slopes. Toxicity The plant c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhododendron Neoglandulosum
''Rhododendron columbianum'', commonly known as western Labrador tea, swamp tea, or muskeg tea, is a shrub that is widespread in the western United States and in western Canada, reported from British Columbia, Alberta, Washington, Oregon, Idaho, California, Montana, Wyoming, Utah, Nevada, and Colorado. It grows in wet places from sea level up to . It was formerly known as ''Ledum columbianum''. Its origins date back to the late Pliocene. Description ''Rhododendron columbianum'' is a shrub up to tall, spreading by means of underground rhizomes. The evergreen leaves are ovate to lanceolate, fragrant when crushed. Flowers are white to cream, borne in groups of 10 to 35. The leaves grow very close to the stalk and their bottoms bear tiny white hairs. Taxonomy History ''Rhododendron columbianum'' was originally named ''Ledum columbianum,'' so it appears as its former name in many texts''.'' In 2009 Kathleen A. Kron and Walter S. Judd deemed the morphology of genus ''Ledum'' alike e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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