Caloplaca asser3914e.jpg

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Caloplaca asserigena, section through apothecial margin. The narrow true exciple has orange pigment at its surface. The thalline margin has abundant algal cells and has a poorly developed cortex.

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