Flowering and Fruiting
Swamp white oak is monoecious; male and female flowers appear on the same tree in the spring at about the time leaves are one-third developed (May to June). The fruit, an acorn, matures in 1 year and is generally paired and home on slender stalks from 3 to 8 cm (1.25 to 3.25 in) long. The ovoid acorns, each 19 to 32 mm (0.75 to 1.25 in) long and 13 to 19 min (0.5 to 0.75 in) in diameter, fall during September and October.
- Burns, Russell M., and Barbara H. Honkala, technical coordinators. 1990. Silvics of North America: 1. Conifers; 2. Hardwoods. Agriculture Handbook 654 (Supersedes Agriculture Handbook 271,Silvics of Forest Trees of the United States, 1965). U.S. Department of Agriculture, Forest Service, Washington, DC. vol.2, 877 pp. http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm
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