White Fir and Grand Fir in Northwest California and Across the West

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White Fir and Grand Fir in Northwest California and Across the West

Pinaceae White fir and grand fir grand fir Abies grandis needles variable in length in northwest California grow flatly (relative to the branch) in two rows greyish bark has long, and across the West shallow furrows Bark: light brown with blister rusts when young becoming white and smooth at top of tree, dark gray or even purplish color develops at base with age, shallow linear to blocky furrows on the surface of the bark, inner bark reddish Needles: variable but up to 1”, dark green above with groove, two rows of stomatal bloom below, lie flat relative to branch in two rows with needles on upper row slightly shorter than those below, notched tipCones : 2”-4”, standing upright, green with purplish hues with maturity Habitat: Cool, moist coastal forests south through California to Sonoma County, below 2000’ Pinaceae white fir Abies concolor green cones sit upright at tops of trees in early summer, before they are consumed bark distinctly “drips” at base of tree, like wax on a candle Bark: Light gray, smooth, with resin blisters when younger, becoming ashy gray Range* map for white fir ( var ) and deeply furrowed at base with age; vertical “melting” appearance at base; Abies concolor . concolor when cut, yellowish or mottled yellow and red (grand fir purple) Needles: white fir (Abies concolor var. lowiana) 1”-2.5”, grooves on upper surface, stomatal bloom on both surfaces, vary from grand fir ( ) lying flat (on lower limbs) to curving upward, soft to the touch, “pine scent” Abies grandis when crushed; notched tip unique to northwest California populations Cones: hybrids (concolor x grandis) 3”-5”, standing upright, green in color when fresh, drying to brown Habitat: dry * based on Little (1971), Burns and Honkala (1990) and Van Pelt (2001) and moist sites, varied soil, often in pure stands, 3000’-6500’ www.conifercountry.com Michael Kauffmann | www.conifercountry.com Range* map for white fir (Abies concolor var. concolor) white fir (Abies concolor var. lowiana) grand fir (Abies grandis) hybrids (concolor x grandis) * based on Little (1971), Burns and Honkala (1990) and Van Pelt (2001) Michael Kauffmann | www.conifercountry.com.

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