From 1892 through 1932 a dynamite factory on this site provided explosives for lead, zinc and coal mines in the tri-state area and nitroglycerin for use in Oklahoma oil fields.
Northern red oak is a large tree with a tall, straight trunk; large, spreading branches; and a rounded crown.
Leaves are alternate, simple, 5–9 inches long, with 7–11 bristle-tipped lobes cut halfway to the midrib. Lobes are uneven in size and length, those along the upper half short and broad. Upper surface smooth, yellow-green; lower surface smooth with occasional tufts at the intersection of the veins.
Bark is greenish-brown to gray, becoming brown to black with age. Grooves shallow, ridges wide, flat-topped, grayish bark appearing as stripes. Bark on upper trunk rough and shallow-fissured, with broad, smooth streaks; bark on lower trunk gray to black, deeply furrowed.
Twigs are slender, reddish-brown, slightly hairy at first, becoming smooth and shiny. Buds reddish, fringed with hair.
Flowers April–May, in catkins.
Fruits September–October, acorns, reddish-brown, shiny, 1–1¼ inches long, barrel-shaped, hairy at the cup end. Cup encloses about ¼ of the nut. Acorns ripen in autumn of second year.
Habitat and Conservation
Where to See Species
Marshall Junction Conservation Area is off Route CC in southern Saline County. The area is approximately two miles south and three miles west of the I-70/Highway 65 intersection.