Ochrolechia arboFlam2.jpg

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Ochrolechia arborea, growing on a large twig of a planted Prunus cf. avium tree in a domestic garden in VC 20, Hertfordshire. The twig has a nutrient-enriched community but the smooth bark of Prunus twigs renders them slightly acidic (O. arborea is typically associated with acid-bark and lignum). Image copyright Andrew Harris.

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