By allowing ads to appear on this site, you support the local businesses who, in turn, support great local journalism.
Extension: What is that green slime in my lawn?
Nostoc is not an alien lifeform, nor is it a plant, algae, or bacterium. Instead, Nostoc is a cyanobacterium. Cyanobacteria are like bacteria in that they are microscopic, single-celled organisms that contain no cell nucleus.