microscopic bushy lichen lichenes symbiosis of cyanobacteria and fungi. scurfy green background texture

algae apothecia apothecium association background bark biology botany bushy closeup colours combined component crustose cultivation cyanobacteria different drippy filaments flora foliose forest form forms fruticose fungi green greenery growth lichen lichenes lichens life macro matte microcosm microscope microscopic moist nature plant properties relationship research round science scurf scurfy sizes symbiosis symbiotic texture wildlife wood young