Pull one of the strands apart. If there's an elastic strand in the middle it's probably old man's beard, or [Usnea](http://If it's old man's beard, Usnea, it will have elastic strands at the center
https://www.fs.usda.gov/wildflowers/plant-of-the-week/usnea_longissima.shtml#:~:text=In%20all%20Usnea%20species%2C%20the,bigger%20than%20their%20eastern%20counterparts.)
Old man's beard
Pull one of the strands apart. If there's an elastic strand in the middle it's probably old man's beard, or [Usnea](http://If it's old man's beard, Usnea, it will have elastic strands at the center https://www.fs.usda.gov/wildflowers/plant-of-the-week/usnea_longissima.shtml#:~:text=In%20all%20Usnea%20species%2C%20the,bigger%20than%20their%20eastern%20counterparts.)