xanthoria parietina, crustose lichen, reproductive organs of lichen, apothecium with spores close-up, odessa

xanthoria parietina common orange lichen crustose apothecium reproductive organs spores ukraine fungus photobiont treubouxia teloschistaceae lecanoromycetes lecanorales lichenology biodiversity ecosystem macro symbiosis flora texture detail closeup yellow nature environment conservation species organism growth forest woodland tree rock lichenicolous mycology reproduction fruiting body ascomycete perithecium pycnidium thallus soredium isidium diaspores dispersal germination