. 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
. 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 shiny above but silvery below with fine, star-shaped hairs. Male flowers of 5-10 stamens are borne in long, loose, pendulous inflorescences from the leaf axils. 1 to several female flowers occur in the axils of new leaves. The acorn is up to 2-4 cm long, ellipsoidal, and the top half or more is enclosed by a roughened, fringe-margined cup. Flowering in April-May. This is Montana's only native Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Vanderhorst, James P; Cooper, Stephen V; Heidel, Bonnie L; United States. Bureau of Land Management; Montana Natural Heritage Program. Helena, MT : Montana Natural Heritage Program
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