Alnus sp., Image 1
Windblown alders along the Mendocino coast of northern California
Alnus sp., Image 2
Windblown alders along the Mendocino coast of northern California.
Alnus sp., Image 3
Alders and lichens, Carmel Valley, California
Alnus sp., Image 4
Alders in Southeast Alaska
Alnus sp., Image 5
Alders in Southeast Alaska.
Alders in coastal Mendocino County, California. Image 6
Alnus sp., Image 7
An alder trunk in Southeast Alaska, in clean air.
Alders don't have white bark, all that white is lichens (see below)
Alnus sp., Image 8
An alder trunk in Southeast Alaska, in polluted air behind a pulp mill
The plume of smoke from the mill has killed the lichens,
revealing the actual color of the bark.
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