Quercus oocarpa is a large forest tree frequently more than 25 metres (82 feet) tall, evergreen or deciduous, with a trunk as much as 100 centimetres (39 inches) in diameter. The leaves are sometimes as much as 45 cm (18 in) long, broadly egg-shaped with numerous small pointed teeth along the edges.3
Quercus oocarpa ranges from southwestern Mexico (Nayarit, Jalisco, and Guerrero states, and possibly Chiapas), through Guatemala, Honduras, Nicaragua, and Costa Rica to Panama. Some specimens of Quercus insignis M.Martens & Galeotti from Chiapas have been confused with this species.4
It inhabits humid montane forests, including cloud forests and pine–oak–Liquidambar forests, between 1400 and 2000 meters elevation.5
McVaugh, R. 1974. Flora Novo-Galiciana: Fagaceae. Contributions from the University of Michigan Herbarium 12:63-64 in English, with line drawing on page 64 https://www.biodiversitylibrary.org/item/46657#page/67/mode/1up ↩
Muller, C. H. 1942. The Central American species of Quercus. United States Department of Agriculture. Bureau of Plant Industry. Miscellaneous Publication 477: 1–216 ↩
Mario González-Espinosa, Jorge A. Meave, Francisco G. Lorea-Hernández, Guillermo Ibarra-Manríquez and Adrian C. Newton, eds (2011). The Red List of Mexican Cloud Forest Trees. Fauna & Flora International, Cambridge, UK. 2011. ISBN 9781903703281 /wiki/ISBN_(identifier) ↩