Oaks of the World

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  Quercus x coutinhoi
Author Sampaio 1910 Man. Fl. Port. 123 1910.
Synonyms faginea x robur subsp broteroana
= x ferreirae A.Camus
= x molleri A.Camus 1934
Local names
Range Portugal; Spain;
Growth habit rarely exceeding 3m;
Leaves marcescent, dark green above, tomentose beneath; 5-10 secondary vein pairs;
Flowers male catkins 1-2.5 cm long ; perianth with obtuse, ciliate at margin lobes; anther 0.4-0.7 mm long; April to June;
Fruits acorn 2-3 cm long, 1-1.4 cm wide; peduncle tomentose; cup with appressed, imbricate scales;

Bark, twigs and
buds

hard bark, slightly furrowed;
Hardiness zone, habitat

withstands 19° C below zero;

Miscellaneous
Subspecies and
varieties

This taxon has several sub-species :

-- Q. ferreirae A. Camus 1934
= Q. faginea subsp faginea X Q. robur subsp estremadurensis
This taxon had recently been considered as a subspecies of Q. x coutinhoi by F.M. Vazquez & al., then replaced by the same authors at the rank of hybrid species.

-- nothosubsp duriensis Vasc. & Franco
= Q. faginea x Q. robur var. salicifolia

-- nothosubsp subalpestris F.M.Vazquez & al.
= Q. faginea subsp alpestris X Q. robur subsp estremadurensis

-- subsp beturica F.M. Vázquez, A. Coombes, M. Rodriguez-Coombes, S. Ramos & E. Doncel 2002
= Q. faginea subsp broteroi X Q. robur subsp estremadurensis
leaves leathery, 3-9 x 2.5-7 cm, hairless above, glabrous ou glabrescent below, sinuate-lobed, oblong to spatulate, with 4-9 vein pairs, apex rounded, base cordate or attenuate; petiole glabrous 0.6-1.5 cm; flower solitary on a pubescent peduncle 1-2.5 cm long; plant sterile; area restricted to a unique locality in Badajoz Province.
- In 2014, this taxon has been promoted to a true nothospecies rank : Q. x beturica (F.M. Vazquez & al.) F.M. Vazquez, C.Vila-Viçosa, Meireles & C.Pinto-Gomes 2014 stat. nov. It is characterized by stellate trichomes abaxially.

 
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