Q: Bill, on the bark of my Crepe Myrtles, I noticed grayish growth. I can peel this growth off fairly easily. What is this growth and is it hurting my tree? A: It sounds like you have lichens. Lichens ...

A lichen, or lichenized fungus, is actually two organisms functioning as a single, stable unit. Lichens comprise a fungus living in a symbiotic relationship with an alga or cyanobacterium (or both in ...

Lichens are like canaries in the coal mine because they’re eating air, scientist says When you walk past a tree in Edmonton's river valley, you may notice tree trunks and branches are covered in ...

Lichens are the curious result of cohabitation between algae and fungi. Biologist Frank Bungartz tells DW about his passion for lichens - and why seeing them disappear should ring alarm bells. DW: You ...

The chemical composition of lichens depends on the basis (substrate) on which they grow. Probably, in this way lichens adapt to adverse conditions - a high level of acidity (low pH) or the presence of ...