(Rhizocarpon) · The yellow patches are yellow map lichen (Rhizocarpon geographicum), and the gray ones are single-spored map lichen (Rhizocarpon disporum). · 9/29/2013 · North Bubble Hike, Acadia National Park, Bar Harbor, Maine · ≈ 12 × 8″ (31 × 21 cm)
(Rhizocarpon) · The yellow patches are yellow map lichen (Rhizocarpon geographicum), and the gray ones are single-spored map lichen (Rhizocarpon disporum). · 9/29/2013 · North Bubble Hike, Acadia National Park, Bar Harbor, Maine · ≈ 12 × 8″ (31 × 21 cm)