Oaks of the World

5-12 x 3-6 cm (slightly larger than Q.pubescens), broadly oboval to oblong, flat; base rounded or subcordate; 5-7 pairs of lobes often rounded, lobulate, sometimes mucronate; adaxially with solitary and fasciculate stipitate trichomes; woolly beneath at first, with numerous simple uniseriate trichomes, less abundant fasciculate-stipitate trichomes, some, solitary ones along midrib, and stomatas partially covered with wax, glabrescent and totally glabrous when mature; petiole 0.3-2 cm;

-- Sub-genus Quercus, Section Quercus, Series Roburoid;
-- For Govaerts & Frodin, it is a synonym of Q.pubescens but they think it is possible to give it a specific rank.
-- For Hedge & Yaltirik (1982), this taxon may be a hybrid between pubescens and petraea...

-- For some Authors, mainly Italian ones, Q. amplifolia (diagnosis HERE) is a true species, described like that :
<< Tree to 20 m, with dark brown, thick, strongly fissured bark; young twigs pubescent; petiole 0.4-1.2 cm long; blade coriaceous, 5-18 cm x 5-16, oboval to suborbicular, base subcordate, adaxially dark green with sparce hairs, abaxially greyish with densely pubescence, margin with 3-5 pairs of rounded, sometimes mucronate lobes, variable depth of sinuses; male catkins 3-5 cm long, flowers with perianth 5-6-lobed ciliate and entire; pistillate catkins 2-4 mm bearing 3-5 flowers; infrutescence short, bearing 1-4 subsessile or shortly pedunculate acorns; cup enclosing 1/4 of acorn, with strongly tuberculate scales, subglabrous to pilose; acorn ovoid to ellipsoid 2-4 cm long, rounded and mucronate at apex; flowers in March-April; fruits maturing in October-November; on drought soils; Center and South Italy; Sicilia; Sardinia; >>