Notes: Lichen Flora of the Greater Sonoran Desert, Wetmore (2008) lists Caloplaca subpyraceella (Nyl. ex Hasse) Zahlbr. as a questionable synonym of Caloplaca luteominia var. luteominia. He also states it could be a miss identificaiton of.
Microlichens of the Pacific Northwest, Bruce McCune (2017) Identifies both species as seperate. Spores are consistant size in C. subpyraceella whereas they are more variable within Caloplaca luteominia var. luteominia. Caloplaca luteominia var. luteominia can be found on coastal rock and consolidated soils also but it seems to prefer virtical wall rock.