Usnea cornuta, major branches showing annellations, constrictions at joints and scattered papillae. Collection on bark of Betula, from Argyll, Scotland.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
