1. species: Typhlocyba quercus (Fabricius, 1777)

    Taxon group: insect - true bug (Hemiptera)

    Typhlocyba quercus
    Typhlocyba quercus (Fabricius, 1777)

  2. species: Quercus petraea (Matt.) Liebl. – Crach Dderw

    Crach Dderw, Sessile Oak, Durmast Oak, Derwen Ddigoes, Derwen Mes Di-Goes, Derwen Fawr Ganghennog

    Taxon group: flowering plant

    Quercus petraea
    Quercus
    Quercus petraea (Matt.) Liebl.

  3. species: Quercus ilex L. – Derwen Anwyw

    Derwen Anwyw, Derwen Fythddeiliog, Evergreen Oak, Holm Oak, Glasdonen, Glastonnen, Derwen Fythwyrdd, Derwen Bytholwyrdd

    Taxon group: flowering plant

    Quercus ilex
    Quercus ilex L.
    Quercus

  4. species: Tuberculatus (Tuberculatus) querceus (Kaltenbach, 1843)

    Taxon group: insect - true bug (Hemiptera)

    Tuberculatus (Tuberculatus) querceus (Kaltenbach, 1843)
    Tuberculatus (Tuberculatus) querceus

  5. species: Favonius quercus (Linnaeus, 1758) – Dealain-Dè Roinne Stiallach Corcarach

    Dealain-Dè Roinne Stiallach Corcarach, Purple Hairstreak, Dealan-Dè Roinne Stiallach Corcarach, Purple Hairstreak Butterfly, Brithribin Porffor, Brithribiniau Porffor

    Taxon group: insect - butterfly

    Favonius quercus
    Favonius quercus (Linnaeus, 1758)

  6. species: Quercus borealis Michaux f. (accepted name Quercus rubra)

    Quercus borealis
    Quercus borealis Michaux f.

  7. species: Otthia quercus Fuckel (accepted name Phaeobotryon quercicola)

    Otthia quercus Fuckel
    Otthia quercus

  8. species: Quercus pseudoturneri Willd. (accepted name Quercus ×turneri 'Pseudoturneri')

    Quercus pseudoturneri
    Quercus pseudoturneri Willd.

  9. species: Agaricus quercus (accepted name Lenzites betulina)

    Agaricus quercus

  10. species: Uredo quercus Brond. (accepted name Cronartium quercuum)

    Uredo quercus Brond.
    Uredo quercus