botanical and vegetation survey of carter county montana bureau of land management administered lands botany rare plants reprinted with permission from the new britton and brown illustrated flora of the northeastern united states and adjacent canada vol 2 page 42 copyright 1952 the new york botanical garden quercus macrocarpa bur oak bur oak is a small to large tree its bark is deeply furrowed and twigs are stout the alternate oblong elliptic leaves are 10 20 cm in length and are deeply to shallowly lobed with the terminal lobe being the largest leaves are dark green and shi rfr105.jpg from united theological seminary hotel management diploma🌟网址：zjw211 com🌟 View Photo