But the cause of the stripbark growth spurt has more to do with the fact that if there's only a strip of cambium in use there is no radial component to speak of. (climateaudit.org)
The meristematic tissue in the trees cambium produces them. (climateaudit.org)
Wind - carried spores, invading from Asia, entered cracks in the bark, spreading a foreign fungus that sickened and killed the cambium layer. (firstthings.com)