orange and gray lichens on coastal limestone stones and rocks in crimea

algae algal flora botany brown closeup coastal limestone covered crimea disclike apothecia ecology fungi geological geology gray lichen greenish yellow growth lace rock lichenes lichenology lichens moss natural stones nature old stone outdoors parmelia photosynthetic plant layers sporophyte spots surface tarkhankut texture thallus wild xanthoparmelia sp xanthoria beach island landscape ukraine