Blackjack oak
Quercus marilandica
''Quercus marilandica'', the blackjack oak, is a small oak, one of the red oak group ''Quercus'' sect. ''Lobatae''. It is native to the eastern and central United States, from Long Island to Florida, west as far as Texas, Oklahoma, and Nebraska. 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 tall, with bark cracked into rectangular black plates with narrow orange fissures. The leaves are 7–20 cm long and broad, and typically flare from a tapered base to a broad three-lobed bell shape with only shallow indentations. 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 acorn is small, 12–20 mm long and 10–18 mm broad; like other red oaks, it takes 18 months to mature.
''Quercus marilandica'' is a small deciduous tree growing to 15 meters tall, with bark cracked into rectangular black plates with narrow orange fissures. The leaves are 7–20 cm long and broad, and typically flare from a tapered base to a broad three-lobed bell shape with only shallow indentations. 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 acorn is small, 12–20 mm long and 10–18 mm broad; like other red oaks, it takes 18 months to mature.