Usnea in Europe http://www.ut.ee/ial5/k2n/
key/usnea_eu/index.html
  • Usnea cornuta, base
  • Usnea cornuta, branch
  • Usnea cornuta, papillae
  • Usnea cornuta, isidia
  • Usnea cornuta, isidia
  • Usnea cornuta, isidia
  • Usnea cornuta, medulla
  • Usnea cornuta, medulla