Opegrapha xerica 4.jpg

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Opegrapha xerica, section of lirella mounted in water. TLGB&I (2009) states that the epithecium is olive greenish but in many specimens (such as Powell 4053) brown pigment dominates. Futher observations are required to confirm the typical colour of the epithecium in water.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith