Quercus rubra L.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Fagaceae
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Scientific Name
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Description
Species Description - Tree to 50 m; bark smoothish and with a reddish-purple cast until the trunk is 2–3 dm thick, eventually developing broad, shallow furrows between the narrow, flat, gray ridges; inner bark reddish or red-brown; young twigs glabrous, dark reddish-brown; lvs dull green, 10–20 cm, soon glabrous throughout or often with small tufts of persistent hairs on the vein-axils beneath, 7–11-lobed, the lobes roughly triangular, broadest at base, bristle-tipped and usually with a few lateral teeth, little if at all longer than the width of the central body of the blade; crown-lvs often more deeply cleft than the lower lvs as just described; acorn to 3 cm, its cup shallow, saucer-shaped, 2–3 cm wide and covering a fifth or a fourth of the nut, or sometimes the cup somewhat narrower and deeper and enclosing a third of the somewhat smaller (2–2.5 cm) nut; acorn-cup with a ring of hairs inside around the scar. N.S. and P.E.I. to Ga., w. to Minn. and Okla. (Q. borealis)
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Common Names
northern red oak