Old Man's Beard, Beard Lichen, Treemoss, Methuselah's beard lichen (Usnea spec.), at a branch

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Size: 3451px × 5315px
Photo credit: © blickwinkel/Hecker / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., beard, bioindicator, bioindicators, branch, branches, coaction, commensal, dependence, ecology, epiphyte, epiphytes, format, hecker, index, indicator, interaction, lichen, lichens, man, methuselah, organism, organisms, partnership, plant, plants, symbiosis, symbiotic, treemoss, twig, twigs, usneaceae, vertical