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Abies concolor (White Fir), leaf, upper surfaceJanuary 6 2009
Hedborn Jr., Edward A.
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Abies fraseri (Fraser's Fir), leaf, lower surfaceJanuary 6 2009
Hedborn Jr., Edward A.
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Abies fraseri (Fraser's Fir), leaf, lower surfaceDecember 1 2009
Hedborn Jr., Edward A.
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Abies fraseri (Fraser's Fir), leaf, upper surfaceDecember 1 2009
Hedborn Jr., Edward A.