Caloplaca sipmanii

{{Short description|Species of lichen}}

{{Use Australian English|date=December 2023}}

{{Use dmy dates|date=December 2023}}

{{Speciesbox

| image =

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| taxon = Caloplaca sipmanii

| authority = S.Y.Kondr., Kärnefelt, Elix & Vondrák (2009)

| range_map = {{Infobox mapframe|coord={{coord|23|12|55.38|S|150|37|44.60|E}}|zoom=3}}

| range_map_caption = Holotype site: Baga National Park, Queensland

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Caloplaca sipmanii is a species of corticolous (bark-dwelling), crustose lichen in the family Teloschistaceae. Found in Queensland, Australia, it was formally described as a new species in 2009 by the lichenologists Sergey Kondratyuk, Ingvar Kärnefelt, John Elix, and Jan Vondrák. The type specimen was collected by the third author from Baga National Park (Rockhampton, Queensland) at an elevation of {{convert|50|to|150|m|ft|abbr=on}}, where it was found growing on Eucalyptus bark. The species epithet of this lichen pays homage to the Dutch lichenologist Harrie Sipman, in whose honour the volume featuring this species was dedicated. Caloplaca sipmanii contains lichexanthone as a major lichen product.