| 词条 | Acer nigrum |
| 释义 |
| name = Black maple | image = Acer nigrum - University of Kentucky Arboretum - DSC09326.JPG | image_caption = | status = G5 | status_system = TNC | regnum = Plantae | unranked_divisio = Angiosperms | unranked_classis = Eudicots | unranked_ordo = Rosids | ordo = Sapindales | familia = Sapindaceae | genus = Acer | species = A. nigrum | binomial = Acer nigrum | binomial_authority = F.Michx. | range_map = Acer nigrum range map 1.png | range_map_caption = Acer nigrum natural range }}Acer nigrum (black maple) is a species of maple closely related to A. saccharum (sugar maple), and treated as a subspecies of it by some authors, as Acer saccharum subsp. nigrum.[1][2] Identification can be confusing due to the tendency of the two species to form hybrids. The simplest and most accurate method for distinguishing between the two trees is the generally three-lobed leaves of the black maple versus the generally five-lobed leaves of the sugar maple. The leaves of the black maple also tend to have a "droopy" appearance. Other differences that are not as pronounced include darker, more deeply grooved bark, slightly smaller seeds, and thicker petioles. Hybrids are intermediate in their characteristics. DistributionThe geographic range of A. nigrum is slightly more limited than the sugar maple, encompassing much of the Midwestern United States, portions of the Eastern United States, and the southeast of Canada in southern Ontario.[3] DescriptionThe black maple's mature height ranges from 21 to 34 meters (70 to 110 feet).[4] UsesThis species is used similarly to the A. saccharum, for timber as hard maple, for landscaping, and for maple syrup production.{{citation needed|date=May 2016}} See also
References1. ^{{PLANTS |symbol=ACNI5 |taxon=Acer nigrum}} 2. ^{{GRIN | Acer saccharum subsp. nigrum | 314801 | accessdate = 2017-12-20}} 3. ^{{cite web | url = http://esp.cr.usgs.gov/data/atlas/little/acernigr.pdf | dead-url = yes | title = Acer nigrum Range Map | accessdate = 2008-03-06 | publisher = United States Geological Survey | archive-url = https://web.archive.org/web/20080509170555/http://esp.cr.usgs.gov/data/atlas/little/acernigr.pdf | archive-date = 2008-05-09 | df = }} 4. ^{{cite web | url = http://www.na.fs.fed.us/pubs/silvics_manual/volume_2/acer/nigrum.htm | title = USDA Forest Service Guide to Black Maple | accessdate = 2014-08-24 | publisher = USDA Forest Service}} External links{{Commons category|Acer nigrum}}
9 : Acer|Trees of Ontario|Trees of Quebec|Trees of Eastern Canada|Trees of the Southeastern United States|Trees of the Northeastern United States|Trees of the North-Central United States|Trees of the United States|Trees of the Great Lakes region (North America) |
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