Oaks of the World

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  Quercus x runcinata
Author (A.DC) Engelm. 1878 Trans. Acad. Sci. St. Louis 3: 542
Synonyms imbricaria x rubra
= rubra ß runcinata A.DC 1864 Prodr. 16(2) : 60
Local names
Range Central and N.E. USA
Growth habit tree;
Leaves 10-13(17) cm long; oboval-oblong; assymetrical; tappered at apex; base rounded to truncate; 3-4 pairs of acute lobes; often with a brownish pubescence beneath; petiole 1.5-2.5 cm long;
Fruits acorn as those of Q. rubra;

Bark, twigs and

young shoots soon glabrous; buds ovoid, pubescent, 6 mm long;
Hardiness zone, habitat hardy;
Miscellaneous -- Section Lobatae;
-- Known since 1883;

Subspecies and