Plantae > Tracheophyta > Magnoliopsida > Aquifoliales > Aquifoliaceae > Ilex > Ilex opacaIlex opaca (American holly)Synonyms: Ageria opaca (homotypic); Ilex americana; Ilex aquifolium (heterotypic); Ilex canadensis (heterotypic); Ilex laxiflora; Ilex opaca f. opaca; Ilex opaca f. subintegra; Ilex opaca f. xanthocarpa; Ilex opaca var. acuminata; Ilex opaca var. floribunda; Ilex opaca var. globosa; Ilex opaca var. integra; Ilex opaca var. latifolia; Ilex opaca var. laxiflora; Ilex opaca var. macrodon; Ilex opaca var. subintegra; Ilex quercifolia; Ilex serrata f. xanthocarpa Ilex opaca, the American holly, is a species of holly, native to the eastern and south-central United States, from coastal Massachusetts south to central Florida, and west to southeastern Missouri and eastern Texas. |
Air Quality Improvement [1] | Low | Allergen Potential [1] | Medium-High | Carbon Capture [1] | Low | Screening - Summer [2] | Dense | Screening - Winter [2] | Dense | Shade Percentage [1] | 81 % | Temperature Reduction [1] | Low | Wind Reduction [1] | Medium-Low |  | Bloom Period [2] | Mid Spring | Drought Tolerance [2] | Medium | Edible [3] | May be edible. See the Plants For A Future link below for details. | Fire Tolerance [2] | Low | Flower Type [3] | Dioecious | Frost Free Days [2] | 4 months 20 days | Fruit/Seed Abundance [2] | Low | Fruit/Seed Begin [2] | Summer | Fruit/Seed End [2] | Fall | Growth Form [2] | Single Stem | Growth Period [2] | Spring, Summer | Growth Rate [2] | Slow | Hazards [3] | Although no specific reports of toxicity have been seen for this species, the fruits of at least some members of this genus contain saponins and are slightly toxic. They can cause vomiting, diarrhoea and stupor if eaten in quantity; The fruits can cause violent vomiting; | Janka Hardness [4] | 1020 lbf (463 kgf) Soft | Leaf Type [3] | Evergreen | Lifespan [2] | Perennial | Pollinators [3] | Bees | Propagation [2] | Bare Root, Container, Cutting, Seed | Root Depth [2] | 30 inches (76 cm) | Seed Spread Rate [2] | Slow | Seed Vigor [2] | Low | Seeds Per [2] | 28430 / lb (62677 / kg) | Shape/Orientation [2] | Erect | Specific Gravity [5] | 0.57 | Structure [3] | Shrub | Usage [3] | A number of cultivars of this species are used for hedging; Fairly wind-resistant, this species is also used in shelterbelt plantings;
A dye has been made from the berries - the colour is not given;
Wood - light, tough, not strong, close grained, highly shock resistant, easily worked; A strikingly white wood, it is valued for use in veneers and inlay; It weighs 36lb per cubic foot; Too small for commercial exploitation, but it is valued for use in cabinet making and the interior finishes of houses; The wood can also be stained to imitate ebony; | Vegetative Spread Rate [2] | None |  | Flower Color [2] | Yellow | Foliage Color [2] | Green | Fruit Color [2] | Red |  | Fall Conspicuous [2] | Yes | Fruit Conspicuous [2] | Yes |  | Height [3] | 49 feet (15 m) | Width [3] | 4.92 feet (1.5 m) |  | Hardiness Zone Minimum [1] | USDA Zone: 6 Low Temperature: -10 F° (-23.3 C°) → 0 F° (-17.8 C°) | Hardiness Zone Maximum [1] | USDA Zone: 9 Low Temperature: 20 F° (-6.7 C°) → 30 F° (-1.1 C°) | Light Preference [2] | Mostly Shady | Soil Acidity [2] | Moderate Acid | Soil Fertility [2] | Intermediate | Water Use [1] | Moderate | View Plants For A Future Record : Ilex opaca |
Name |
IUCN Category |
Area acres |
Location |
Species |
Website |
Climate |
Land Use |
Assateague Island National Seashore |
II |
8621 |
Maryland, United States |
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Big South Fork National River and Recreation Area National Recreation Area |
V |
120283 |
Kentucky, Tennessee, United States |
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Blue Ridge Parkway National Parkway |
V |
73611 |
North Carolina, Virginia, United States |
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Cape Lookout National Seashore |
II |
18379 |
North Carolina, United States |
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Carolinian-South Atlantic Biosphere Reserve |
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310228 |
North Carolina, South Carolina, Georgia, United States |
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Central Gulf Coastal Plain Biosphere Reserve |
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40530 |
United States |
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Chesapeake & Ohio Canal National Hist. Park National Historical Park |
V |
19586 |
Maryland, District of Columbia, United States |
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Chickamauga & Chattanooga Nat'l Military Park National Military Park |
V |
8248 |
Georgia, Tennessee, United States |
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Colonial National Historic Park National Historical Park |
V |
9316 |
Virginia, United States |
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Coweeta Hydrologic Laboratory LTER Site Long Term Ecological Research |
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North Carolina, United States |
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Cumberland Gap National Hist. Park National Historical Park |
V |
24282 |
Kentucky, Tennessee, Virginia, United States |
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Felsenthal National Wildlife Refuge |
VI |
66133 |
Arkansas, United States |
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Fire Island National Seashore |
V |
9433 |
New York, United States |
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Fort Caroline National Memorial |
III |
137 |
Florida, United States |
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Fort Donelson National Battlefield |
III |
560 |
Tennessee, United States |
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Fredericksburg and Spotsylvania Nat'l Military Park National Military Park |
V |
10384 |
Virginia, United States |
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Gateway National Recreation Area |
V |
1807 |
New Jersey, United States |
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Gauley River National Recreation Area |
V |
10157 |
West Virginia, United States |
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George Washington Birthplace National Monument |
V |
435 |
Virginia, United States |
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George Washington Memorial Parkway |
V |
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Virginia, United States |
|
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Gettysburg National Military Park |
V |
3560 |
Pennsylvania, United States |
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Great Smoky Mountains National Park |
II |
515454 |
North Carolina, Tennessee, United States |
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Great Swamp National Wildlife Refuge |
VI |
3161 |
New Jersey, United States |
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Harpers Ferry National Historical Park |
VI |
715 |
West Virginia, United States |
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Hobcaw Barony (North Inlet) National Estuarine Research Reserve |
|
7585 |
South Carolina, United States |
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Horseshoe Bend National Military Park |
V |
1926 |
Alabama, United States |
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Little River National Wildlife Refuge |
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Oklahoma, United States |
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Little St. Simons Island |
|
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Georgia, United States |
|
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Mammoth Cave Area Biosphere Reserve (Natn'l Park) National Park |
II |
51235 |
Kentucky, United States |
|
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|
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Manassas National Battlefield Park |
III |
5132 |
Virginia, United States |
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Moores Creek National Battlefield |
III |
100 |
North Carolina, United States |
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Morristown National Historical Park |
VI |
1677 |
New Jersey, United States |
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National Capital Parks - Central National Park |
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District of Columbia, United States |
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National Capital Region - East National Park |
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District of Columbia, United States |
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New Jersey Pinelands Biosphere Reserve |
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New Jersey, United States |
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New River Gorge National River National River and Wild and Scenic Riverway |
V |
55591 |
West Virginia, United States |
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Obed Wild and Scenic River National River and Wild and Scenic Riverway |
V |
5268 |
Tennessee, United States |
|
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Ocmulgee National Monument |
V |
693 |
Georgia, United States |
|
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Oconee National Forest Botanical Reserve |
|
306 |
Georgia, United States |
|
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|
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Petersburg National Battlefield |
III |
3338 |
Virginia, United States |
|
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Prince William Forest Park |
|
19378 |
District of Columbia, United States |
|
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|
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Richmond National Battlefield Park |
III |
1517 |
Virginia, United States |
|
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Rock Creek Park |
|
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District of Columbia, United States |
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Santee Coastal Reserve and Washo Reserve State Habitat Area |
IV |
20850 |
South Carolina, United States |
|
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Shenandoah National Park |
II |
108221 |
Virginia, United States |
|
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|
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Shiloh National Military Park |
III |
4061 |
Tennessee, United States |
|
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|
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South Atlantic Coastal Plain Biosphere Reserve |
|
20317 |
South Carolina, United States |
|
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|
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Southern Appalachian Biosphere Reserve |
|
37548505 |
North Carolina, Tennessee, United States |
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Tennessee River Gorge |
|
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Tennessee, United States |
|
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Valley Forge National Historical Park |
VI |
3509 |
Pennsylvania, United States |
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Attributes / relations provided by ♦ 1i-Tree Species v. 4.0, developed by the USDA Forest Service's Northern Research Station and SUNY-ESF using the Horticopia, Inc. plant database. ♦ 2USDA Plants Database, U. S. Department of Agriculture ♦ 3Plants For A Future licensed under a Creative Commons Attribution 4.0 License♦ 4Wood Janka Hardness Scale/Chart J W Morlan's Unique Wood Gifts ♦ 5Forest Inventory and Analysis DB version 5.1, May 4, 2013, U.S. Forest Service ♦ 6Biological Records Centre Database of Insects and their Food Plants♦ 7Ben-Dov, Y., Miller, D.R. & Gibson, G.A.P. ScaleNet 4 November 2009 ♦ 8Study of Northern Virginia Ecology♦ 9Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics. ♦ 10HOSTS - a Database of the World's Lepidopteran Hostplants Gaden S. Robinson, Phillip R. Ackery, Ian J. Kitching, George W. Beccaloni AND Luis M. Hernández |
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0
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