Strap Lichen

At 8:30 a.m. in the morning, I looked out of the sliding glass door, and I noticed some objects, that were either stuck, or resting, on the outside of the outdoor patio screen. One object, was a medium green color on one side, and a dark green color on its other side. This green object, was about three sixteenth of an inch long, and three sixteenth of an inch wide. This green object, had spines sticking out all over. This green object, was stuck on the outside, of the outdoor patio screen.