Lichens are formed when a fungus merges with green or blue algae. Lichens can be found on the bark of trees, leaves, rocks and soil. Lichens are sometimes confused with moss, but they are biologically different.
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Identification Of Lichens
Lichens have plant like bodies without stems, leaves or roots. Lichens can be very small or cover large areas.
Foliose lichens have a leafy appearance and can contain numerous bumps or ridges. They are loosely attached by threads that resemble roots.
These lichens form a crust on the bark of trees and rocks. Crustose lichens adhere tightly, which makes it almost difficult for them to be removed.
The flashy three dimensional fruiticose lichens look more like plants than any of the other lichens. They often appear to be miniature shrubs as they are the most highly developed form of lichen.
Squamulose lichens have small scale like lobes that overlap to form mats. These lichens are attached at only one end.