[1] Found in New South Wales, Australia, it is characterised by its powdery soredious mass and numerous tiny apothecia (fruiting bodies).

The type specimen was collected in New South Wales, specifically at Blue Waterholes in the Caves Creek area, located 42 kilometres (26 mi) west-northwest of Adaminaby.

The specimen, found at an altitude of 1,250 m (4,100 ft), was growing on a semi-exposed rock face in limestone outcrops within a grassland.

[3] Caloplaca streimannii resembles Flavoplaca limonia in the colour of its soredious mass, but differs as it does not develop conblastidia and has narrower ascospores.

Additionally, Caloplaca streimannii shares some similarities with the pantropical species C. cupulifera, but is distinguished by its crateriform eroding soralia.