Region covered by area codes 601 and 769. Area codes 601 and 769 are the telephone area codes for central Mississippi. The main area code, 601, was one of the original area codes implemented in 1947, and served all of Mississippi.n 1999, area code 662 was created in the northern half of Mississippi, including the Mississippi side of the Memphis area. The 1999 split was intended as a long-term solution, but within five years 601 was close to exhaustion due to the proliferation of cell phones, particularly in the Jackson area.
Lichen is the product of a symbiotic relationship between a fungus and a photosynthetic organism, usually a photosynthetic bacteria or algae.
You are correct in your observation that it is a mold growing on the trunks of your trees. But even more correct is that it is a lichen. Lichens are a combination of two distinct plants that have taken up living together to get benefits from each other. The first part of the symbiotic relationship is the blue-green algae that pair up with a fungus (mold) that can't produce its own food stuffs. The blue-green algae produce sugars and starches and amino acids that the fungus uses to grow, and the fungus provides a substrate for the algae to attach to and grow and prosper.