Quercus petraea subsp pinnatiloba

Europe; West Asia; in France, does not occur in Alps, South and South-West; at higher elevations than Q.robur ;

20 m tall usually; may reach 45 m tall, with trunk to 2 m in diameter;

6-12 (-16) x 4-7 (-9) cm; stiff; wider near the middle of the blade; base slightly truncate, or oblique; 5-8 pairs of rounded lobes, with sinuses reaching sometimes half way to the midrib; hairless (or a few bulbous and solitary trichomes), shiny, dark green above; dull, pale green beneath, with sessile fascicled hairs (rays 60-120 µm long) at axils of veins, scattered 4-rayed stellate hairs, and a lack of wax on the stigmas; 5-7(-8) vein pairs; inconspicuous tertiary veins; sinusal veins present;  petiole 1-3 cm long, yellowish green, hairless, sulcate above;

April-May; male catkins golden brown, drooping, 5-8 cm long, pubescent; pistillate inflorescences towards tip of new shoot, 2-6 together;

acorn 1.5-4 cm long, 1-2.5 cm in diameter, ovoid; enclosed 1/3 by cup; cup sessile or nearly so, with appressed, brownish, pubescent, oval lanceolate scales, almost flat above; maturing in 1 year in September-October; stylopodium hairy; basal scar flat;

hardy; not quite whithstanding late frost; all types of soils, including poor, calcareous ones, but prefers acidic and well drained ones; long-lived; fast growing;

– A.Camus : n° 155; – Sub-genus Quercus, Section Quercus, Series Roburoid. – Differs from Q.pubescens in having a long petiole and hairless twigs; – The natural hybrids of Q. petraea are : Q. x cantabrica , Q. x rosacea , Q. x salcedoi , Q. x streimii , Q. x tabajdiana , Q. x trabutii , Q. x viverii . – OOTW reports hybrid: Q. × cantabrica ((Q. petraea × Q. pyrenaica) × Q. robur subsp. broteroana) [complex hybrid] – OOTW reports hybrid: Q. × diversifrons (Q. petraea × Q. virgiliana) – OOTW reports hybrid: Q. × roseoides (Q. petraea × Q. × rosacea)