Oaks of the World

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  Quercus x runcinata
Author (A.DC) Engelm. 1877
Synonyms imbricaria x rubra
= rubra var. runcinata A.DC
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;
Flowers  
Fruits acorn as those of Q. rubra;

Bark, twigs and
buds

young shoots soon glabrous; buds ovoid, pubescent, 6 mm long;
Hardiness zone, habitat hardy;
Miscellaneous known since 1883
Subspecies and
varieties
 
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