The word crottle can be used as a noun to mean any of several lichens of the genus Parmelia from which the reddish brown or purple dyes are made. Lichen is any thallophytic plant of the division Lichenes. They occur as crusty patches or bushy growths on tree trunks, rocks or bare ground.
Q&A Related to "What is the Definition of Crottle"
Lichens (, sometimes ) are composite organisms consisting of a fungus (the mycobiont) and a Photosynthesis partner (the photobiont or phycobiont) growing together in a symbiosis...