Here’s another take on an item we posted last week . . .
Dating back nearly 150 years, the textbook example of symbiosis has been lichen, which relies upon a mutualistic relationship between an alga and a fungus.
Now, that well-known dualistic relationship is being challenged.
Researchers at the University of Montana, working together with colleagues from Austria, Sweden and Purdue University, have found that some of the world’s most common lichen species actually are composed of three partners — not the widely recognized two.