Calicium robustellum

{{Short description|Species of lichen}}

{{Speciesbox

| taxon = Calicium robustellum

| authority = Nyl. (1861)

| synonyms =

}}

Calicium robustellum is a crustose lichen that is found growing on trees in the Gascoyne region of Western Australia{{FloraBase|name=Calicium robustellum|id=27619}} and in Queensland.{{cite web|url=https://apps.des.qld.gov.au/species-search/details/?id=22997|title=Calicium robustellum|work=WetlandInfo|date=20 October 2014|publisher=Department of Environment and Heritage Protection, Queensland|accessdate=15 November 2023}}