Psorotich schea4456f.jpg

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Psorotichia schaereri, section through one of the granular isidia of the thallus. The photobiont in Psorotichia is not Nostoc as in many of its look-alikes. The photobiont is stated to be 'Xanthocapsa' with cells in small groups surrounded by gelatinous sheaths, though it is difficult to distinguish between photobiont cells and fungal hyphae in normal sections.

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