Look for this PDF icon at the top of each page as you search and browse. Habitats include moist bottomland woodlands, upland woodlands, and savannas where deciduous trees are dominant. They have been affected by mining, associated road construction and maintenance, and grazing (Vanderhorst et al. One of the most common trees in Minnesota, extending far out on the prairies in the western part of the state; usually grows singly in open stands and in fields; requires moist, well-drained soil; easily propagated but grows slowly; moderately shade tolerant. Well-adapted to alkaline soils, poor drainage, and high clay content, Bur Oak is also very drought-tolerant. Being exceptionally tolerant of drought, this tree is often used in roadside plantings and shelterbelts. Form:  Bur oak has a very characteristic form, with a stout, usually short main stem and a very large irregular canopy with very stout branches. The first few diagnoses pointed to a common fungus, Tubakia dryina, as the culprit.However upon further research BOB was said to be caused by a new unnamed species of Tubakia, later named Tubakia iowensis T.C. However, in the rest of its range, the seeds germinates soon after falling an before winter. It co-dominates in various proportions with Rocky Mountain juniper (. Bur oak is at the extreme western edge of its range in Montana, where it occurs in a localized, though fairly large, occurrence in Carter County. Score1 - Moderate: Generally 10,000-100,000 individuals. N. Amer. Features corky bark and huge acorns with fringed cups. Range: A large range with the greatest abundance in the Midwest. This tree is most commonly found in bottomland woodlands a little outside of the flood zone. It is a large, rounded tree with bold limbs and a thick trunk. BOB started to appear in Midwestern states in the 1990s. Paul S. Johnson. The bur oak is a mighty sight to behold. Those characteristics helped this oak survive the elements of its wide-reaching natural range. Burr Oak Ranch offers quality whitetail and exotic hunting near Dallas, Texas. Rodney Dunn. Female flowers in clusters of 1 to 3; the perianth adnate to the ovary, surrounded by a scaly, cup-like involucre; pistil 1 with 3 styles. Bur Oaks produce the largest acorns of all the oaks, they can be 1.5 inches long with an oblong form and ½ to ¾ covered by a burr-like cup that gives the tree its common name. & D. McNew sp. Fire may have played a role in maintaining Q. macrocarpa by reducing competition from non-stump sprouters such as ponderosa pine and juniper, and suppression of wildfire may be having an adverse effect on Q. macrocarpa recruitment. Uses:  The wood is indistinguishable from other white oaks and is sold as such. Its massive trunk and rough bark help it exist in a very broad natural range in a variety of habitats - from bottomlands to dry uplands. They are susceptible to many diseases that include; anthracnose, oak wilt, oak leaf blister, bur oak blight, and leaf spot. Bur Oak tolerate a wide range of soils but prefers moist soils. Bur oak is a member of the white oak group. Quercus macrocarpa - Bur oak Range Map. Bur OAK Mossycup Oak Blue oak Quercus macrocarpa Z 3-8 H 70' W 50' . It is in the white oak group. (Click on the following maps and charts to see full sized version), (Observations spanning multiple months or years are excluded from time charts), http://FieldGuide.mt.gov/speciesDetail.aspx?elcode=PDFAG05190, (Lesica 2012. Noteworthy Characteristics. Habitat: Intolerant of shade, although young trees may hold on for a few years in the shade of other trees. Bur oak blight (BOB) is a fungal disease that is relatively new to the plant pathogen landscape. Bur oak are long lived and hardy trees. The acorns are the largest of any oak, and long-distance dispersal is limited. For bur oak information and tips on bur oak care, click this article. Score1 - Moderate Vulnerability: Specific biological attributes, unusual life history characteristics or limited reproductive potential makes the species susceptible to extirpation from stochastic events or other adverse impacts to its habitat and slow to recover. Massachusetts. Here's some links if you want to download a whole group. of acorns in a year (Asmus, p. 1). 12 to 14 total points scored out of a possible 19. There's another oak, Quercus lyrata (overcup oak), that the bur oak can sometimes be confused with—their ranges overlap a bit in East Texas, they can hybridize, and overcup oak also has an acorn cap that wraps much of the way around the acorn (hence its common name). Small branches often have ridges of corky bark, making them appear especially prominent in winter. Burr oak is mostly a tree of prairie edges, and is uncommon in New England. Some bur oak acorns range in size from large marble to golf ball. BRIT Press. Also planted widely as a landscape tree throughout Texas. Mighty and majestic, the bur oak is a survivor. Flowering takes place in spring, and acorns mature in one year. Problem insects include; gall wasps, leaf miners, borers, oak webworm, oak skeletonizer, and June beetles. Back on Dec. 1, 2016, I offered you a story about the historical medicinal aspects of sassafras and its role in the early exploration of the New World by Europeans in “The Strange Tale of Sassafras.” Today, let us take a quick look at this unique native, rarely seen in our area. The "Alzada Oaks" constitute Montana's only known stand of bur oak, and the stand lies at the westernmost edge of the species' natural range. Male flowers borne in a drooping, interrupted, spike-like inflorescence; perianth 6-lobed with 6 to 10 stamens. Map Legend. Leaves alternate, simple, petiolate; the blades obovate, 6–15 cm long, pinnately lobed, the lobes rounded with wavy margins. The leaves are large and deep green, turning yellow-brown in the fall. Midlothian, TX 76065. Bur oak (Quercus macrocarpa), a deciduous member of the beech family, features large, fringed acorns and a … Bur oaks are the dominant trees that grace Arbor Day Farm and the hills and valleys surrounding Nebraska City. 1998; Lesica 2012); eastern temperate N. It is in the white oak group. Bur oak is native to the eastern and central United States. The acorns can be up to 2 inches in size and have a thick mossy cap. Bur Oak is noted for having the largest acorn of all native Oak species. Common names are from state and federal lists. BUR OAK. Score3 - Very Low: Generally occurring in 3 or fewer Subwatersheds (6th Code HUC’s). It ranges from southern New Brunswick, central Maine, Vermont, and southern Quebec, west through Ontario to southern Manitoba, and extreme southeastern Saskatchewan, south to North Dakota, extreme southeastern Montana, northeastern Wyoming, South Dakota, central … Fagaceae -- Beech family. The common name, bur oak, refers to the fringe of hairs around the cup of the acorn. Fort Worth, TX), Web Search Engines for Articles on "Bur Oak". It is a slow-growing, long-lived tree capable of living 200-300 years and it can reproduce both vegetatively and sexually. Reply. Throughout bur oak's range, studies indicate that reduced fire frequencies often associated with European settlement have been detrimental to bur oak [104,137,182,183,236]. Click on a place name to get a complete protected plant list for that location. Bentonite mining is active in this area and exotic weeds are prevalent though negative impacts to bur oak have not been documented due to a lack of surveys and monitoring. Wnd is the primary means of pollination. You are here: Score1-3 - Declining: Species is likely declining though the magnitude of declines is uncertain. Bur oak is known to botanists as Quercus macrocarpa, from the Latin and Greek words for large-fruited oak (quercus - oak, macro- large, καρπός-karpos-fruit).It has the largest acorns of any oak tree. Gorgeous Rosena Ranch home … Its massive trunk has gray to brown furrowed bark and its branches bear lustrous dark green leaves that turn yellow-brown in fall. 3). Vol. Bur Oak acorns are easy to plant and will germinate in a few weeks. With a magnificent canopy, a whole restaurant can dine outdoors underneath its enormous spreading branches. The Bluegrass is in the southeastern edge of the range, and the importance value is low. Connecticut. It has the largest acorns of any oak tree. Largest Bluegrass bur oak: Woodford County, KY, 288 inches circumference, 102 feet tall, 91 foot crown spread. Habitat. Bur oak is well adapted to fire with its thick bark. In Wisconsin, however, our Bur Oaks are of the oliviformis variety, which has smaller acorns than the species. Oldest known bur oak: 402 years, Custer State Park, South Dakota. Quercus macrocarpa Michx.. Bur Oak. The bur oak is considered a productive tree though no yield amounts could be located. Fruit a hardened, ovoid nut (acorn) 15–50 mm long, surrounded at the base by the hardened, cup-like, scaly and hairy involucre. If the tree is not doing well I would call your local extension office and ask if they have a tree person that could come take a look. The largest acorns of any oak tree white oaks and is widely scattered in a year ( Asmus p.. Obovate, 6–15 cm long, pinnately lobed, the lobes rounded with wavy margins at prairie,... Extreme southeastern corner of the state in Powder River and Carter Counties ( Vanderhorst al. 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