| 词条 | Sorbus americana |
| 释义 |
| name = American mountain-ash | image = Sorbus americana.jpg | regnum = Plantae | unranked_divisio = Angiosperms | unranked_classis = Eudicots | unranked_ordo = Rosids | ordo = Rosales | familia = Rosaceae | genus = Sorbus | sectio = Commixtae[1] | species = S. americana | binomial = Sorbus americana[2] | binomial_authority = Marshall | synonyms =
| synonyms_ref = [3] | range_map = Sorbus americana.png | range_map_caption = Distribution map of native Sorbus americana range. }} The tree species Sorbus americana is commonly known as the American mountain-ash.[4] It is a deciduous perennial tree, native to eastern North America.[1] The American mountain-ash and related species (most often the European mountain-ash, Sorbus aucuparia) are also referred to as rowan trees. DescriptionSorbus americana is a relatively small tree, reaching {{convert|40|ft|m|disp=flip}} in height.[1] The American mountain-ash attains its largest specimens on the northern shores of Lake Huron and Lake Superior.[5]It resembles the European mountain-ash, Sorbus aucuparia.
DistributionNative to eastern North America;
BiotaThe berries of American mountain-ash are eaten by numerous species of birds and small mammals, including ruffed grouse, ptarmigans, sharp-tailed grouse, blue grouse, American robins, other thrushes, waxwings, jays, squirrels, and rodents. American mountain-ash is a preferred browse for moose and white-tailed deer. Moose will eat foliage, twigs, and bark. Up to 80 percent of American mountain-ash stems were browsed by moose in control plots adjacent to exclosures on Isle Royale. Fishers, martens, snowshoe hares, and ruffed grouse also browse American mountain-ash.[8] CultivationSorbus americana is cultivated as an ornamental tree, for use in gardens and parks. It prefers a rich moist soil and the borders of swamps, but will flourish on rocky hillsides. A cultivar is the red cascade mountain-ash, or Sorbus americana 'Dwarfcrown'. It is planted in gardens, and as a street tree.[9] References1. ^1 2 McAllister, H.A. (2005). The genus Sorbus: Mountain Ash and other Rowans. Kew Publishing. 2. ^[https://www.itis.gov/servlet/SingleRpt/SingleRpt?search%20topic=TSN&search%20value=25319&print%20version=PRT&source=to%20print ITIS Report Sorbus americana] 3. ^{{Tropicos}} 4. ^{{cite web|url=http://plants.usda.gov/java/charProfile?symbol=SOAM3|title=Conservation Plant Characteristics for ScientificName (CommonName) - USDA PLANTS|website=plants.usda.gov}} 5. ^1 {{cite book |last=Keeler |first=Harriet L. |title=Our Native Trees and How to Identify Them |publisher=Charles Scriber's Sons |year=1900 |location=New York |pages=136–140}} 6. ^{{GRIN|id=34994|name=Sorbus americana}} 7. ^{{cite web|url=http://plants.usda.gov/java/threat?statelist=states&stateSelect=17|title=Threatened Search Results - USDA PLANTS|website=plants.usda.gov}} 8. ^{{cite web |url=http://www.fs.fed.us/database/feis/plants/tree/sorame/all.html |title=Fire Effects Information System}} 9. ^{{cite web|url=http://www.urbanforestnursery.com/treeprofiles/profileredcascademountainash.html |title=Urban Forest Nursery: Tree Profile for the Red Cascade Mountain Ash|website=www.urbanforestnursery.com|accessdate= January 31, 2013}} External links{{Commons category|Sorbus americana}}
12 : Sorbus|Trees of the Eastern United States|Trees of Eastern Canada|Trees of the Great Lakes region (North America)|Trees of the Northeastern United States|Flora of the Appalachian Mountains|Trees of the Southeastern United States|Trees of Ontario|Trees of the North-Central United States|Natural history of the Great Smoky Mountains|Garden plants of North America|Ornamental trees |
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