The white stripe is not a dividing line, yet there seems to be an invisible dividing line between the lichen and the moss.
EXIF data: Nikon D7000, center-weighted metering mode, ISO100, 40mm, f/8, 1/25 sec
Green Springs Ranch (CA), Granite Rock, Stripe, Lichen, Moss. Green Springs Ranch, El Dorado County, CA. February 04, 2017. © Copyright Steven Tze – all rights reserved.