Click on image for full screen view. Foliage. Form and fall color. Blackjack Oak, Barren Oak, Jack Oak, Black Oak Quercus marilandica. Fagaceae (black oak group). Lady Bird Johnson Wildflower Center focused on protecting and preserving North America's native plants through native plant lists and image galleries, conservation, education, natural landscapes, seed collection - Millennium Seed Bank (MSB) Project, preserving and restoring native communities, spreading awareness on invasive species and gardening to attract wildlife. Bark of a medium-sized tree. Orange Co., NC 4/12/ Staminate flowers with Blackjack Oak tree in background. Orange Co., NC 4/12/
What Tree Is It? Royal Botanic Gardens, Kew. Quercus neoashei Bush Quercus nobilis Mast. Conditions Comments: Restricted in nature to sandy soils and hardpans, this species is often seen as an scrubby, unattractive tree. The short, nearly black trunk divides into many dense, contorted limbs, bark dark, furrowed; dead branches persistent.
Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists. The short, nearly black trunk divides into many dense, contorted limbs, bark dark, furrowed; dead branches persistent. Leaf blades wedge shaped obdeltoid - obovate with a narrow, rounded base and broadening toward the tip.
Blades shallowly lobed with usually an apical and 2 lateral lobes bearing bristlelike extensions awns of the main vein. Foliage glossy dark green turns red in fall and persists into winter. Quercus or Lithocarpus. This oak sometimes grows in colonies. BARK: thick rough bark, nearly black, with deep furrows, mature bark forming irregular or rectangular plates, orange inner bark.
This species and Post Oak Quercus stellata Wangenh. This tree was first described in from a specimen in the colony of Maryland, referred to in the Latin species name. Blackjack oak is one of the few species of red oaks that shares the white oak group characteristic of vessels blocked by tyloses. Western populations in Texas and Oklahoma are often recognized as Q. View propagation protocol from Native Plants Network. From the Image Gallery Leaf: Leaves glossy yellowish-green above, pale green with dense brown pubescence scurfy below.
Size Class: ft. Native Habitat: Usually exists on rather poor sites with dry sandy or clay soils in the central and southern forest regions. Conditions Comments: Restricted in nature to sandy soils and hardpans, this species is often seen as an scrubby, unattractive tree. When given good soil and room to develops an attractive, symmetrical form.
Quercus marilandica , the blackjack oak , is a small oak , one of the red oak group Quercus sect. There are reports of a few isolated populations in southern Michigan , but these appear to represent introductions.
Quercus marilandica is a small deciduous tree growing to 15 meters 49 feet tall, with bark cracked into rectangular black plates with narrow orange fissures. They are dark green and glossy above, pubescent underneath, and often remain attached to the twigs through the winter after turning colors from red to brown in the fall. The blackjack oak grows in poor, thin, dry, rocky or sandy soils where few other woody plants can thrive, usually on low ground, from sea level up to approximately 2, feet meters in altitude.
Some say that it does not have the beautiful form of many oaks, but is nonetheless a valuable tree for growing in problem sites. It is sometimes an understory tree in pine stands on sandy knolls in the southeastern US. Along the coastal plain of New Jersey the probability of finding this species is increased in relatively sunny, open areas such as those near coastal salt marshes. It often occurs near scarlet and post oaks as well as pitch pine ; understory companions include winged sumac , bracken , sweetfern , and bayberry , and can be found as far north as parts of Ohio  and New York.
In this area, blackjack and post oak form a semi-savanna area composed of forested strips intermixed with prairie grass glades along the eastern edge of the southern Great Plains. This semi-savanna is known as the Cross Timbers.
Blackjack oak sometimes hybridizes with bear oak Quercus ilicifolia , forming a hybrid known as Q. Blackjack acorns provide food for both whitetail deer and wild turkey.
Blackjack is the most popular casino game in the world. Using a basic strategy, a knowledgeable player can reduce the casino's advantage to less than one-half of one percent. Blackjack is also known as " Face cards are worth 10 points, aces are worth either 1 or 11, and all other cards are worth their numerical value. You play against the dealer. You each start with two cards.
Your cards are dealt face up; one of the dealer's cards stays face down. You signal "hit" to receive additional cards. When you are satisfied with your hand, you "stand. If your total ever exceeds 21, you are "bust," and the dealer wins the hand without drawing any more cards. The dealer has no choices to make, and must draw on hands worth less than 17 and stand on hands worth 17 or more. A variant has the dealer draw to a "soft" 17, which is a hand with an ace counting If neither player goes bust, then the hand closest to 21 wins.
Equal totals are a "push," and neither wins. The fact that you can bust before the dealer takes any cards is a disadvantage that would be overwhelming were it not for three additional features of the game.
On your first two cards:. Basic strategy was first described in the paper "The Optimum Strategy in Blackjack," published in the Journal of the American Statistical Association by four authors from the Aberdeen Proving Ground. It is now presented, with a few variations, on dozens of web pages, including Wikipedia.
The strategy assumes that you do not retain information from earlier hands. Your play depends only on your current hand and the dealer's up card. With basic strategy, the house advantage is only about one half of one percent of the original bet. The function hard uses the array HARD to guide the play of most hands. The row index into HARD is the current total score, and the column index is the value of the dealer's up card. The return value is 0, 1, or 2, indicating "stand," "hit," or "double down.