| Quercus bicolor | |
| Author | Willd. 1801 Neue Schriften Ges. Naturf. Freunde Berlin 3: 396 1801 |
| Synonyms | bicolor
var. platanoides (Castigl.) A.DC 1864 bicolor var. cuneiformis Dippel 1891 bicolor var. angustifolia Dippel 1891 mollis Raf. 1938 paludosa Petz. & Kirchn. 1864 pannosa Bosc not Hand.-Mazz. 1864 platanoides (Castigl.) Sudw. 1893 prinus var. bicolor (Willd.) Spach 1841 |
| Local names | swamp
white oak ; bicolor oak; blue oak; |
| Range | NE
U.S.A.; South Canada; 0 to 1000 m; introduced in Europe in 1800; |
| Growth habit | reaches 20 m, and even more; |
| Leaves | 8-20 x 5-11 cm; oboval; apex broadly rounded; base narrowly cuneate; 3-6 pairs of shallow lobes at apical 1/2; bright green and glabrous above; pale glaucous and slightly pubescent beneath (simple and stellate hairs), somewhat velvety; 3-7 pairs of secondary veins; orangish at fall; short petiole 0.4-2 cm; |
| Flowers | |
| Fruits | acorn ovoid 2-3 cm long, singly or paired or to 3; cupule scaly, deep, enclosing 1/2 to 2/3 of nut, with appressed scales; long peduncle 2-7 cm; cotyledons distinct; |
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Bark, twigs and |
bark
light grey, smooth, broken into plates; branchlet light brown or tawny,
glabrous; buds brown, globose, 2-3 mm; |
| Hardiness zone, habitat | hardy; prefers moist, lime-free soils; long-living; |
| Miscellaneous | --
A. Camus : n° 189 ; -- Sub-genus Quercus, Section Quercus, Subsection Prinoideae; -- Related to Q.macrocarpa ; |
| Subspecies and varieties |
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| Pictures |
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