They're versatile plants to use and, as Scott notes, can also grow vertically on trees and walls. Lichens have a slightly bit different growth habit. While Scott notes they are also found on ...

Lichens are nearly everywhere — odd growths that appear as crusty patches and splotches on tree trunks, limbs, rocks, bare soil, stone walls, tombstones, wooden fences. Regardless, lichens often ...

What Is Oral Lichen Planus? Oral lichen planus is a long-lasting disease that affects your mouth, causing symptoms such as painful white patches, redness, and swelling. It doesn't go away ...