Lichenous

"We made a few gargantuan strides, leapt three or four times more, and sat down at last in a lichenous hollow."

"He went on foot across the wilder recesses of the park, where slimy streams of green moisture, exuding from decayed holes caused by old amputations, ran down the bark of the oaks and elms, the rind below being coated with a lichenous wash as green as emerald."

"1907, Louis Fischer, Diseases of Infancy and Childhood, Philadelphia: F.A. Davis, Chapter 6. Disorders Resulting from Improper Nutrition, p. 358, The mouth becomes the seat of a parasitic stomatitis; the skin is harsh and dry; small boils or a lichenous rash make their appearance."