Oaks of the World

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  Quercus x diegoi
Author F.M. Vazquez, C. Pinto-Gomes & al. 2014
Synonyms Q. fruticosa Lam. X Q. pyrenaica Willd.
Local names
Range Estremadura (Spain)
Growth habit

up to 6 m.

Leaves 3,5-6 (-7) x 1-3,5(-4,2) cm, ovate to obovate, lobate or serrate, base and apex rounded, margin entire near base; young leaves pubescent adaxially; mature leaves glabrescent with multistellate hairs; abaxially greyish tomentose with numerous fasciate hairs, mixed with the same number of multistellate ones; simple hairs on veins; petiole tomentose, 4-9 mm long;
Fruits sterile, without fruits;

Bark, twigs and

bark fissured, blackish; mature twigs glabrous, greyish; young twigs pubescent, covered with greyish fasciate trichomes;
Hardiness zone, habitat rocky or clayish calcareous, moist soils;

-- Differs from Q. lusitanica (= Q. fruticosa) in having a longer petiole (less than 4-5 mm in fruticosa);
-- Differs from Q. pyrenaica in having smaller leaves with multistellate and fasciate hairs underneath (versus essentially fasciate in pyrenaica), and a shorter petiole.

Subspecies and