Quercus estremadurensis O. Schwarz

Central-West Iberian Penisula, specially Portugal

reaches 20 m tall

7-14 cm x 4-7; marcescent or sometimes evergreen; flat, rather irregular, rhomboid, slightly leathery; adaxially shiny and hairless; dull abaxially, hairless ou glabrescent (sometimes with multiradiate and/or simple trichomes, mainly on the midvein), almost glaucous; base auricled; margin sinuate-lobate with 6-7 unequal, short, pointed, sometimes mucronate lobes; sinus rather narrow, shallow; 6-8 veins pairs, sinuous, slightly or not prominent, at an acute angle with the midrib; no sinusal veins; tertiary veins thin; summer leaves are narrower, more irregular, with less secondary veins and some sinusal ones; petiole pinkish, short (5-15 mm)

acorn ovate-oblong, with persistent stylopodium; peduncle to 8 cm and more, slender, more or less glabrous; aborted acorns frequent; cup with numerous, appressed, pubescent scales, those of the base larger than those near the rib;

This taxon is, for the Spanish and Portuguese Authors, a true species, regarding its range, its habitat, its ecological behaviour, its morpholigical features (pubescence and shape of the leaves, among others), and the shape and development of its embryo.