fishbone beard lichen

algae ancient ascomycota beard branch closeup commensalistic composite crustose cyanobacteria detail environment epiphytes filipendula fishbone flora foliose forest fungi fungus gray grey hang hanging haustoria lecanorales lecanoromycetes lichen lichenicolous long macro morphogenesis moss mutualistic natural old organism outdoor parmeliaceae photosynthetic poikilohydric symbiosis symbiotic twig usnea wild wilderness wood woodland