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Quercus lusitanica

Lam.

Lusitania oak

iNaturalist· cc-by

(c) Duarte Frade, some rights reserved (CC BY), uploaded by Duarte Frade

iNaturalist· cc-by

(c) zebedeugalinha, some rights reserved (CC BY)

iNaturalist· cc-by

(c) zebedeugalinha, some rights reserved (CC BY)

Quercus lusitanica, commonly known as gall oak, Lusitanian oak, or dyer's oak, is a species of oak native to Portugal, Spain (Galicia and western Andalucia) and Morocco. Quercus lusitanica is the source of commercial nutgalls. These galls are produced by the infection from the insect Cynips gallae tinctoriae. They are used for dyeing. Several other species are known colloquially as "gall oaks;" indeed, galls can be found on a large percentage of oak species. The specific epithet "lusitanica" refers to the ancient Roman Province of Lusitania, corresponding roughly to present-day Portugal and Extremadura in Spain.

Description

A cool temperate tree in the oak family (Fagaceae) suitable for hardiness zone 4.

This description is brief — help expand it

Edible Uses

The seeds are eaten as nuts.

Distribution

It is a cool temperate plant. It suits hardiness zone 4.

Where It Grows

Australia, Europe, Greece, Mediterranean, USA,

Notes

There are about 600 Quercus species.

Synonyms

Quercus infectoria Oliv.Quercus fruticosa Brot.and others

References (5)

  • Encycl. 1:719. 1785
  • Hibbert, M., 2002, The Aussie Plant Finder 2002, Florilegium. p 244
  • Jackes, D. A., 2007, Edible Forest Gardens (As Quercus fruticosa)
  • Plants for a Future database, The Field, Penpol, Lostwithiel, Cornwall, PL22 0NG, UK. http://www.scs.leeds.ac.uk/pfaf/ (As Quercus fruticosa)
  • Sfikas, G., 1984, Trees and shrubs of Greece. Efstathiadis Group. Athens. p 150

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