Cross section of Fraser Fir

#27 - Cross section of Fraser Fir from Cabin Ridge on the slope of Mount Rogers, VA.

This was the first Fraser Fir in Mount Roger’s Fraser Fir ecosystem to be discovered to be infested with the balsam wool adelgid. Tree cut down in 1978, the year bark infesting adelgids discovered.

Dark wide late wood rings are called “rotholz” (German for redwood). This abnormal wood caused by tree’s response to adelgids’ stylet penetrations.

Other Wood Samples