Quercus
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Cerris
holly oak section
- characteristics of both red and white oak sections
Quercus
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Quercus macrocarpa
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Quercus
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Quercus
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Hudson River Park galleries:
S Charles - West 11th Pines - Weat 12th |
Hudson River Park galleries:
S Pines - West 12th West 12th - Horatio |
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants Superdivision Spermatophyta – Seed plants Division Magnoliophyta – Flowering plants Class Magnoliopsida – Dicotyledons Subclass Hamamelididae Order Fagales Family Fagaceae – Beech family Genus Quercus L. – oak |
KingdomPlantae – plantes, Planta, Vegetal, plants SubkingdomViridiplantae – green plants InfrakingdomStreptophyta – land plants SuperdivisionEmbryophyta DivisionTracheophyta – vascular plants, tracheophytes SubdivisionSpermatophytina – spermatophytes, seed plants, phanérogames ClassMagnoliopsida SuperorderRosanae OrderFagales FamilyFagaceae GenusQuercus L. – chêne, oak
Species
Quercus bicolor – swamp white oak |
Species
Quercus macrocarpa Michx. – bur oak |
Species
Quercus robur L. – English oak |
Species
Quercus acutissima – sawtooth oak |
swamp oak
bicolor oak
Scientific name refers to the difference in coloration between upper and lower leaf surface Native to mid-western and northeastern US
Native habitat: Moist woods; bottomlands; stream edges and poorly-drained mineral soils Lifespan: 300 to 350 years Salt spray tolerance moderate Soil salt tolerance poor Look for on leaves
Galls
Multicolored Asian Lady Beetles
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burr oak
savannah oak prairie oak mossycup oak mossy-overcup oak blue oak scrub oak
Native to eastern and central US Native habitat: Savanna Life span: 200 to 400 years Salt spray tolerance high Soil salt tolerance good Look for on trunks
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truffle oak
pedunculate oak
Native to Europe, western Asia, and northern Africa Native habitat: Woodland Salt spray tolerance high Soil salt tolerance moderate |
sawthorn oak
Japanese silkworm oak
Native to eastern Asia Salt spray tolerance moderate Introduced into eastern United States ca. 1920 |
Toxic Part:
Acorns and young leaves Toxin Delivery Mode: Ingestion Symptoms: Stomach pain, constipation and later bloody diarrhea, excessive thirst and urination |
Edibility:
EDIBLE PARTS: Acorns after tannins are leached or boiled out HARVESTING: Only collect nuts from areas you know |
Toxic Principle:
Gallotannins, quercitrin, and quercitin Severity: LOW TOXICITY WHEN EATEN |
The bur oak is a pioneer species of the tall grass prairie and the prairie margin. Its fast growing taproot and efficient use of water allows it to get established in competition with prairie shrubs and grasses.
The thick, rough bark of the trunk and the corky bark of the twigs of the bur oak make the tree fire resistant, so that larger trees may survive hot (700 degrees F.), fast-burning (600 feet per minute) wildfires. Where fire suppression is prevalent bur oak islands may be replaced by shade-tolerant forests of maple. (Contrast with Willow Oak.) The acorns, with deep, fringed cups, are the largest of all native oaks. The common name of the tree refers to the cups slight resemblance to the burr of the chestnut. As a member of the White Oak Group, the bur oak's acorns are edible once the tannins have been removed by leaching or boiling. See here for instructions. |
Quercus
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Quercus macrocarpa
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Quercus
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Quercus
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Tree / Buds / Bark
Tree
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Flowers
Foliage
Leaves
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Leaves
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Leaves
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Leaves
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Fruit
Quercus
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Quercus macrocarpa
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Quercus
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Quercus
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