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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 this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ledum Palustre
''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 ove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ledum Decumbens
''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 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 ove ... [...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 pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ledum 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 plan ... [...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] |