Caloplaca citrina (K+ purple, sparsely fertile, entirely sorediate, on basic rock)
Caloplaca citrina (K+ purple, sparsely fertile, entirely sorediate, on basic rock)
Lecanora pulicaris (Apothecia to 1mm, white K+ y thallus, fine crystals extending from epithecium into hymenium, massive crystals in exciple 15x7µm spores)
Lecidella elaeochroma (red-brown hypothecium, C+ o thallus)
Melanelixia fuliginosa subsp fuliginosa
(C+ red medulla, Brown-green lobes, on rock)
Tephromela atra (Hymenium opaque dark purple)
Lecanora campestris (C-, K+ y, no crystals on epithecium, small crystals in exciple and hypothecium, outer margin to exciple).
Ochrolechia parella (85x50µm spores)
Caloplaca ochrocea (thin yellow thallus, flat disks)
Protoblastenia rupestris (Disks up to 1mm, 15µm spores, K+ crimson).
Placopyrenium fuscella (grey thallus, large areoles, sometimes on V.nigrescens)
Toninia aromatica (white flecks on thallus, seepage cracks of rocks)
Candelariella vitellina (K-, thallus orange-yellow granules)
Buellia aethalea
Rhizocarpon reductum (8spores per ascus, K+ y thallus, colourless 27x11 muriform spores)
Lecanora crenulata