“The orange cornflour we used will soon ... with one person sharing a photo of people touching the rocks with the caption “but what about the lichen?!?” In a press release published last ...

said his interest in lichen started when he wanted to know about the vivid yellow and orange blotches covering the rocks along the Highline Trail. “I kept seeing yellow. Now, I was thinking ...

Lichens come in many colors (yellow, red, orange, blue and grey ... although some lichens are stringy,' says Scott. 'Lichens on rocks are flat, on trees they are stringy,' he explains.