Quercus × bimundorum
Common name: 
Two Worlds Oak
Bimundors Oak
Pronunciation: 
KWER-kus bi-mun-DO-rum
Family: 
Fagaceae
Genus: 
Quercus
Type: 
Broadleaf
Native to (or naturalized in) Oregon: 
No
  • Deciduous tree, 30-40 ft (~10-12 m) tall.  Leaves simple, alternate, obovate, 7-9 rounded lobes, apex obtuse, base of blade may have ear-like projections (auriculate); petiole 5-10 mm long.  Fruit (acorn) ovoid, 1.5-2 cm long.
  • Hardy to USDA Zone 4      Apparently a common hybrid in eastern North America for at least 100 years.  The hybrid is described by E. J. Palmer [J. Arnold Arboretum 29:18 (1948)].
  • There are at least to selections of the hybrid in commerce:
    • Crimson Spire™  -  (Q. × bimundorum 'Crimschmidt')
    • Prairie Stature™  -  (Q. × bimundorum 'Midwest')
  • bimundorum: Latin, bi, two, and mundus, worlds, hence Two Worlds because it is a hyrid of Q. robur, English Oak, (from the "old world") and Q. alba, White Oak, native to Eastern North America (i.e., the "new world").
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