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Northwest Conifers

White Fir – Abies concolor Speaker

Tree

White Fir at Reed College

Map 

USGS Distribution Map
Grand/White Fir in yellow,
White Fir in green, based on
information from
Conifer Country

Needles: 2", blue-gray, white lines on top and bottom

Cones: Upright on tree top, 3-5" 

Bark: Gray, furrows on large trunks

Where:  Above 3000 ft. in southwest Oregon

  

White Fir grows throughout the Sierras of California. The White Fir that grows in Oregon is a hybrid of White Fir and Grand Fir, Abies concolor x grandis.* These Oregon hybrids grow in the southern Cascades and Siskiyous. The hybrids take on varying characteristics of each species, which makes identification a challange.

Needles: The needles are longer than most firs, about 2 inches long, curving up in a U or V shape. They are blue-gray, with white lines on both surfaces.

Cones: The cones sit upright like other firs. They are brown with no whiskery bracts protruding beyond the scales. Like other firs, the cones fall apart at maturity, leaving a cone core spike on the branch.

Bark: The smooth, gray bark breaks into deep furrows on large trees, often showing brown or yellowish inner bark like Douglas Fir.

Names: The scientific name, concolor  means "uniform color," describing the color of the needles. Other common names: Balsam Fir, Silver Fir, Concolor Fir.

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Oregon Flora Project and The Gymnosperm Database list these as Abies concolor x grandis. Some call these hybrids Abies grandicolor.


photo

Needles and pollen Cones

Bark


© 2012 Ken Denniston