Oaks of the World

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  Quercus pedunculiflora
Author K.Koch 1849 Linnaea 22: 324
Synonyms robur subsp. pedunculiflora (K.Koch) Menitzky 1967
pedunculata subsp pedunculiflora (K.Koch ) Maire 1908
pedunculata var pedunculiflora (K.Koch) Stojan. 1948
brutia var. pedunculiflora (K.Koch) O.Schwarz 1934
haas var. atrchoclados Borbas & Bornm. 1889
hass auct. eur. not Kotschy 1862
robur var. erucifolia (Stev.)
Asch. & Graebn. 1911
pedunculata f. erucifolia (Stev.) Medwedev 1908
pedunculata var. longipetioleata Medwedev 1908
pinnatipartita (Boiss.) O.Schwarz 1934
pedunculata var. pinnatipartita Boiss. 1879
erucifolia subsp pinnatipartita (Boiss.) O.Schwarz 1936
kurdica Wenzig 1886
erucifolia Stev. 1857 (Camus : n 168)
erucifolia subsp longipes (Stev.) O.Schwarz 1936
robur subsp longipes (Stev.) Hedge & Yalt.
longipes Stev. 1857 ( Camus : n 167 ) Bull. Soc. Imp. Naturalistes Moscou 30: 387
Local names
Range Asia Minor; the Caucasus; the Balkans; to 1800 m;
Growth habit reaches 15 m tall;
Leaves 8-17 x 6-9 cm; like those of Q.robur but a little thicker; dark green, slightly glaucous, hairless above; yellow grey tomentose beneath; 4-5 pairs of lobes with deep sinuses; secondary veins at 60-80 with midrib;  petiole to 2 cm long;
Flowers April - May
Fruits acorn 2-3 cm long, 1.5-2 cm in diameter; stylopodium tomentose; long stalk; enclosed 1/3 by cup; cup 1.8-2.5 cm in diameter, with warty, appressed, rusty yellow scales;

Bark, twigs and

bark grey, furrowed;
Hardiness zone, habitat hardy; all types of soils; very drought resistant;

-- A. Camus : n 166 ;
-- Sub-genus Quercus, Section Quercus, Series Roburoid.

-- For Menitsky (1971), this taxon is actually a race of Q.robur, strongly heterogenous, characters of which are result of both an adaptation to drought climate, and a probable introgression with other species (Q.pubescens and Q.petraea in North of its range, and Q.infectoria in the South).
It differs from Q.robur in having leaves undersides and cup scales hairy, leaves wider with larger, more dentate  lobes, acorn cup broader;

-- For A.Camus, Q.longipes Stev. has petiole twice longer and deserves varietal rank (if not a specific one);

-- Q.erucifolia Steven 1857 (= erucaefolia)
is sometimes considered as a true species; buds 5 mm long ; leaves oboval with rounded apex and slightly cordate, not auricled base; 6-7 x 4-6 cm; minutely tomentose or glabrescent beneath; 6-8 elongated lobes, usually lobulated; tertiary veins present; petiole 0,5-1 cm long; peduncle 2-4 cm long, bearing a small acorn; cup scales flat, with appressed tips.
It is different from Q.longipes by having thinner leaves, peduncle twice shorter, cup with smaller scales not regularly arranged.

-- Q.haas Kotschy 1862
for A. Camus, is " very distinct from Q.pedunculiflora, whose it has been often confused with, by young twigs and peduncles densely tomentose, and cup scales more appressed. It differs from Q.brutia in having leaves tomentose beneath, peduncles and acorns much more elongated, scales more appressed ".
see Q.robur.

Subspecies and