apothecia of crustose lichen growing on a rock near the black sea, ukraine, odessa

algae apothecia biodiversity biology botany branch conservation crustose cyanobacteria ecology endolithic lichens environment filaments foliose folioselichen fungi fungus gray green growth habitat intricatepattern lecanoromycetes lichen microhabitat microscopic moss mutualistic mycobiont natural nature organic organisms photobiont physcia physciaceae species spores surface symbiosis symbiotically taxonomy texture thallus wildlife