Quercus oleoides is a slow-growing tree, reaching 8–15 metres (26–49 feet) in height. Its pale gray leaves are evergreen, thick, hard, 4 to 11 centimetres (1+1⁄2 to 4+1⁄4 inches) long, 2 to 5 cm (3⁄4 to 2 in) wide, oblong or elliptic. It flowers from December through May, with male catkins that are 3 to 4 cm (1+1⁄4 to 1+1⁄2 in) long, and female catkins that are 3 to 30 millimetres (1⁄8 to 1+1⁄8 inches) long, containing one to six flowers, each about 7 mm long.[7]
Its wood is extremely heavy with intercrossed grains; the sapwood is white, and heartwood brown.[8]
^Muller, C. H. 1942. The Central American species of Quercus. United States Department of Agriculture. Bureau of Plant Industry. Miscellaneous Publication 477: 1–216
^Nelson, C. H. 1978. Contribuciones a la flora de la Mosquitía, Honduras. Ceiba 22(1): 41–64
^Pérez J., L. A., M. Sousa Sánchez, A. M. Hanan-Alipi, F. Chiang Cabrera & P. Tenorio L. 2005. Vegetación terrestre. Cap. 4: 65–110. In J. Bueno, F Álvarez & S. Santiago (eds.) Biodiversidad del Estado de Tabasco. CONABIO-UNAM, México