Alpine Fir, Balsam Fir, Subalpine Fir, White Balsam Fir
Abies lasiocarpa var. lasiocarpa
Synonyms: Abies blasamea ssp. lasiocarpa, Abies balsamea var. fallax, Abies bifolia, Abies subalpina, Pinus lasiocarpa
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The photo at left shows a close-up of one stem
of subalpine fir as seen along the Island Springs Trail immediately to the east
of Little Mt. Adams on the eastern slopes of Mt. Adams.........August
25, 2005. The needles are clustered on the upper two-thirds of the stem
like a brush. The photo at right shows a view of the upper stem and upright cones of subalpine fir as seen in upper Killen Creek Meadows, Mount Adams Wilderness......August 4, 2022.
Dorsal surface of needle with a single row
of stomatal bloom and a central groove, more noticeable here towards its base.
Ventral surface of the needle with two broad
rows of stomatal bloom.
The double rows of stomatal bloom of the lower
needle surface of subalpine fir, as seen at treeline beside Crystal Lake on
the western slopes of Mt. Adams.........September 25, 2005.
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Some of the highest elevation subalpine firs on Mount Adams as seen at the base of the terminal moraine of the Adams Glacier near High Camp, Mount Adams Wilderness..........August 19, 2013. The photo at right shows a small subalpine fir found near 7300' on a lateral moraine above the terminal moraine of the Adams Glacier, above the headwaters of the Lewis River, Mt. Adams Wilderness......July 19, 2018.
Paul Slichter