Usnea in Europe http://www.ut.ee/ial5/k2n/
key/usnea_eu/index.html
  • Usnea longissima, base, Bhutan
  • Usnea longissima, base, Bhutan
  • Usnea longissima, branch
  • Usnea longissima, soralia, Bhutan
  • Usnea longissima, medulla, Bhutan