Lichens of Wales

Caloplaca luteoalba

<em>Caloplaca luteoalba</em>

Caloplaca luteoalba

Description & Identification

This species is marked by abundant, bright-orange apothecia (generally 0.3 - 0.5 mm dia) crowded and often contiguous on an inconspicuous grey-white thallus.

C. luteoalba on decorticated sycamore. (Photo: Ray Woods).

Similar Species

 It can resemble C. holocarpa in the field and a fruit body should be collected to determine spore size. 

NBN Taxon Key
NBNSYS0000020545