Sketching - Lichen

I have loved the organic forms found in lichens and moss for many years and have far too many source photos from hikes. Below is some quick sketching from some recent pictures from Jennyclif in Plymouth and Dartmoor national park, showing Flavoparmelia caperata (common green shield lichen), Physcia aipolia (hoary rosette lichen), Usnea filipendula (fishbone beard lichen) and Graphis scripta (graffiti lichen).