4 species
1 subspecies and varieties
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Quercus garryanaGarry oak, Oregon white oak
Distribution: West of the Cascades, Vancouver Island to California; eastern foothills of the Cascades from Kittitas County south to the Columbia River
Habitat: Dry prairies and foothills to rocky bluffs
Origin: Native
Flowers: April - June
var. garryana – Garry oak, Oregon white oak
Quercus palustris
Origin: Introduced
Quercus roburBritish oak, English oak
Origin: Introduced from Europe/Africa
Quercus rubrared oak
Origin: Introduced from central and eastern NA